David A. Lassen, 62, of Aurora passed away suddenly on February 3, 2012. Survived by his wife Jan and children Kelly and Ryan. A Funeral Service will be held on Friday, February 10, 2012 at 1pm at Horan & McConaty Family Chapel located at 11150 East Dartmouth Avenue in Aurora. Memorial Contributions may be made in David's name to Leukemia and Lymphoma Society - Rocky Mountain Chapter, 720 S. Colorado Blvd., Suite 500-S, Denver, CO 80246 or www.lls.org ""In memory of David A. Lassen."" Please share your memories of David and condolences with his family by selecting the ""Sign Guestbook"" button.