Navy Lt. Chris Hussey, a platoon officer with Explosive Ordnance Disposal, Mobiet 1, based out of San Diego, Calif., explains how to sweep a door sill to Pfc. David Levitre with 2nd Platoon, 87th Engineers Company, 5-55th Engineer Brigade, also known as "Triple Nickel," during a training exercise while at Forward Operating Base Warhorse, located in Diyala, Iraq, Jan. 9.