Army Lt. Gen. Jeffrey S. Buchanan, the commander of U.S. Army North, speaks with Air Force civil engineers from the 85th Engineering Installation Squadron, Keesler Air Force Base, Miss., at a communication tower in the mountains in Vega Baja, Puerto Rico, Nov. 8, 2017. Several civil engineers were helping local contractors repair the communication tower that works as a main communication radio hub for the island. Army photo by Staff Sgt. Armando Vasquez