On the night of 17 April 2002, Corporal Dyer and three other soldiers from Alpha Company of 3rd Battalion, Princess Patricia's Canadian Light Infantry were killed, and eight others injured, from a bomb dropped on them by a formation of two United States Air Force F-16 fighter aircraft. The Canadian Forces soldiers were conducting a night live-fire training exercise at a place known as the Tarnak Farm, located about 15 kilometers from the Kandahar airfield and base in Afghanistan.
The Ainsworth Dyer memorial bridge was initiated by the Van Sloten family whose daughter was Ainsworth's fiancée. This site was selected because Ainsworth proposed to Jocelyn Van Sloten on the bridge, they spent much time in the area together, Corporal Dyer trained for the Mountain Man Competition in the area and it is a heavily used public place. The Ainsworth Dyer Bridge was dedicated on April 17, 2004.