Cadet Pfc. Daleth Soares, Cadet Pfc. Nathercia Goncalves and Cadet Staff Sgt. Luiz Fonseca learn about the M-4 Carbine with M-203 Grenade Launcher from Kevin J. Brown, vice president, military programs, at Colt Defense, during the Feb. 20, 2013, opening of the 2013 Association of the United States Army Institute of Land Warfare Winter Symposium and Exposition in Fort Lauderdale, Fla. The three cadets are with the Junior Reserve Officer Training Program at Monarch High School in Coconut Creek, Fla.