Exhibit 10.1 CONSULTING AGREEMENT -------------------- THIS CONSULTING AGREEMENT ("Agreement") is made and entered into as of the 1st day of June, 2005, by and between ENGINEERED SUPPORT SYSTEMS, INC., a Missouri corporation (hereinafter called...Consulting Agreement • June 22nd, 2005 • Engineered Support Systems Inc • Air-cond & warm air heatg equip & comm & indl refrig equip • Missouri
