On October 3, 2006, while serving with the Intelligence Surveillance Target Acquisition and Reconnaissance Squadron, 1st Battalion, The Royal Canadian Regiment Battle Group, in Afghanistan, Master Warrant Officer Lehman responded with great élan to an attack on an observation post in Pashmul that left numerous dead and wounded. Arriving shortly after the initial attack, Master Warrant Officer Lehman, while exposed in the hatch of his vehicle, immediately engaged the enemy with his pintle-mounted machine gun and directed the repositioning of the accompanying vehicles to shelter the wounded. Master Warrant Officer Lehman’s quick and decisive actions under fire helped repel the enemy and contributed to saving the lives of many soldiers.