Chief Warrant Officer 4 Mitch Villafania, OH-58D Kiowa Warrior helicopter pilot, Headquarters and Headquarters Troop, 2nd Squadron, 17th Cavalry Regiment, 101st Combat Aviation Brigade, 101st Airborne Division (Air Assault), shows visiting students some of the computations that pilots make during flight, here, Oct. 8, 2014. The field trip by Kenwood Middle School sixth graders was part of a braoder field trip to make mathematics meaningful outside of the classroom. (U.S. Army photo by Sgt. Duncan Brennan, 101st CAB Public Affairs)