January 25, 2025

Dear Jackie and family, sending our love and prayers, as we remember our dear friend Donnie (DB to Marc). To see his face made us smile. Now we hold the memories of so many happy times with him in our hearts. Marc and Barby Van Ness and family. 

January 24, 2025

I have had the privilege of working with Don on numerous projects in my time working for Kiewit.  Don’s knowledge, enthusiasm and passion for the work we do was truly infectious and will truly be missed.  What will truly be missed the most however, was just how great of a person he was.
My fondness memory of Don was when he came out to the Fermi project in South Dakota.  On the visit he was helping us with some temporary engineering we were doing but he had one request of me and that was to get him a tour of the hoist rooms.  When we went into the hoist room he was like a kid in a candy story and he shared with me how he had studying these hoists in text books when he was in school.  After the visit I had a recruiting dinner at SDSM&T that evening and he was flying out the next day so I invited him to come along and I will never forget how he was sharing his passion for engineering with all of the new hire recruits.
May god bless Don and his Family.
Joshua Schurger

January 23, 2025

Dear Jackie, Doug, Derek, Michele and all the extended family – thinking and praying for all of you during this difficult time and hoping that each of you finds peace in remembering the many happy memories shared with Don over many amazing years of a life well lived.  the extended Lawrence family (former neighbors)

January 23, 2025

Dear Jackie and Family,
So sorry to hear of Don’s passing. He was one of the greatest human beings I have ever known! He and my dad were the best of friends and spent as much time together as they could. The wonderful memories of him will live with everyone who knew him! Sending love and hugs to your whole family from the entire John and Ruth Darras family! 
Peggy Darras Lintner

January 21, 2025

To Ms Jackie and Family, I cannot but remember Mr Brennan’s tranquil, graditude and politeness that He exuded to others….Pulling Doug out of the LCC waters in congratulations and to me and Derek barely finishing our legs in the water while Michelle stood by cheering us all ….which was decades …a long time ago…. It is with these memories that we remember Life and What others instill unto you and others…May Mr Brennan RIP:
Lord, make me an instrument of your peace:where there is hatred, let me sow love;where there is injury, pardon;where there is doubt, faith;where there is despair, hope;where there is darkness, light;where there is sadness, joy.O divine Master, grant that I may not so much seekto be consoled as to console,to be understood as to understand,to be loved as to love.For it is in giving that we receive,it is in pardoning that we are pardoned,and it is in dying that we are born to eternal life.
Chef James

January 21, 2025

Sending love and condolences. James, Vanessa, Jordan & Connot Miante

January 20, 2025

Jackie and Family,  Don was a mentor to many and a friend to ALL!  His counsel and words always were received with gratitude and admiration, will miss him but the memories will be cherished!  
Ken Phillips

January 17, 2025

I have had the good fortune to work with Don for many years.  His depth of experience, sound judgement, techincal expertise and positive attitude have made working with him a treat.  No matter how trivial or challenging the problem Don was will willing to help with his enthusiasm good humor.  Not only did he help mentor me from time to time but was always amazed at the time he took help coach mentor so many of our young engineers and superintendent.  The Kiewit company and I will truly miss him.
Lyman and Natalie File

January 17, 2025

All prayers and strength to you, Jackie and your family.   We so enjoyed Donny and our times together with duck calls, omelets, laughter and happiness….He filled the room with fun and we loved when Don and Jackie spent time with us in Colorado!       So much love, Allen and Dede

January 16, 2025

I have known Don since 2005 working closely with him at Kiewit ever since then.  Don was an amazing mentor of mine.  Don took me under his wing and truly helped show me what it was to be an engineer.  He pushed me to be better every day in everything I did.  He encouraged me to know there is always a solution out there if we put the teams mind to finding it.  These lessons I will carry with me throughout my career.  But the true treasures of knowing Don was his friendship.  He got to know my wife and I very well outside of work, as we had countless dinners together.  He always put her first and made her feel welcome in odd situations.  He joked she was his “girlfriend”.  Together we cherish all of these memories dearly and will greatly miss him.  We pray for Jackie and the whole family.  We have been blessed to have gotten to know many of them, all whom clearly Don played a key role in developing into amazing people.
Blake & Amanda Hladik

January 16, 2025

Our deepest condolences to our dear Canadian friend Don. May your family find solace in all the wonderful memories you must have. The Lamichane family

January 15, 2025

Don was thee best engineer I had ever worked with, always quick to listen to your problem/solution and interact with you in order to get a workwise solution before even starting the design.  Along with being engineeringly savy, on our calls he would always start with how me and my family were getting along, he was always a high point of my day when I interacted with him. He made time for everyone and was a sharp as they coming in building or designing something, Don you will be greatly missed in the Underground/Engineering Community and by me.
Sean Sladicka

January 15, 2025

Don. You son of a gun. You helped get the Science Factory up and running. You were one of the founding sponsors, an exhibit advisor, and most importantly… offered encouragement when the Sciencxe Factory was just an idea. You were the guy who said “We can do this.” and we did!!!!  Thanks Don. All the kids thank you. Jim Bunting

January 15, 2025

So sorry for your loss. Sending love and condolences.  
Byron Garman

January 15, 2025

Jackie and family – my sincerest condolences.  i first met Don as my roommate on a golf outing in NJ and he was a true friend.  We played gin together as a team while he was displaying his humor whether or not we did well.  Working allong side Don on a few projects at the Country Club gave me the appreciation of knowing and seeing his talents as an engineer and businessman.  I will keep your family in my prayers and hope that you find solace for your grief.  Bill Murry

January 15, 2025

Dear Jackie
Sending our sincere sympathy.
Mark and Becky Simeral
 

January 15, 2025

Dear Jackie and family, Judy and I send our sympathies to you all. We’ll miss Don’s smile and warm humor. He was always so welcoming to friends and strangers. May he be in peace.
Paul Ware

January 15, 2025

Dear Jackie and family, we will all miss Don.  it was always a treat to be around him wether in a serious discussion or skiing in Colorado.
David Hughes

January 15, 2025

Jackie and family – so sorry to hear of Don’s passing. He was a wonderful neighbor – we spent a time together on the Eshelman Road HOA – and a trustworthy friend. He helped the Lancaster Country Club a lot too. His engineering skills were amazing. I will really miss seeing and chatting with him.
Tom Despard

January 14, 2025

Sending love and condolences. David, Lia, Alison and John Murphy 

January 14, 2025

So very sorry to learn of this news.  I wish the family peace and strength in this awful time.  Don always left me happy in his presence. What a wonderful, joyful life he lived, and what a wonderful impression he left on all who spent time with him.  As a Canadian, McGill Engineering grad, and Scarlet Key member, I felt additional kinship with him, and enjoyed swapping stories.  He is already missed.
Michael Rispin

January 14, 2025

I had the ultimate privilege of meeting Don in 2011 when he joined Kiewit and I welcomed him him to the Kiewit family as a young engineer – even though he already had 35 years of experience beyond me. He was a great Engineer’s engineer and contributed to our Underground industry in such a significant way. But more importantly- he was a kind, thoughtful and cheerful person to work with. Working with this son Derek for almost 17 years, I am fortunate to have worked with 2 Brennans in the tunneling industry. Rest in Peace Don.
Stephen Liu

January 14, 2025

After reading Don’s obituary, it is obvious that he had a rich and prosperous life with a marvelous use of his time on this earth.  We wish our sincerest condolences to his wonderful family and they are in our prayers.  It was a privilege to have known him and spend time with him.  Best personal regards, Alan and Barbara Ehrlich

January 14, 2025

I got to know Don through my time working together with him at Kiewit. He bailed me out of several challenging situations with his amazing engineering ability and builder-mindset, for that I’m greatful. He was always a kind, easy-going and fun person to work with and I will miss him very-very much. My deepest sympathies go out to his family.
Nick Jones

January 14, 2025

Don
it was a pleasure to work and know for so many years. We worked on many mega projects with Kiewit. You were wonderful human being and one of the kind. Truly want to thank you all the help you provided over the years. I will definitely miss you.
Bhaskar Bhavsar

January 14, 2025

Dear Jackie and family 
so very sorry to hear the news.   It was wonderful the family could be there with you. I hope to talk with you soon.  love Ruth

January 14, 2025

I met your father early on in my 44 year career when he was still working with Elgood Mayo. It was always a pleasure when he would visit the jobsites.  He was a wonderful person.  Always kind, funny and personable.  He will be missed.
Judy Wyckoff

January 14, 2025

A life, well done Sir. 
Thank You for everthing. 
Howard Starr.

January 14, 2025

I am saddened to hear of Don’s passing. It was a pleasure getting to know him in our short time together. My condolences to Jackie and the whole Brennan family.
Amy Shinkus