PETERSON AIR FORCE BASE, Colo. – Col. Thomas Falzarano,

PETERSON AIR FORCE BASE, Colo. – Col. Thomas Falzarano, 21st Space Wing commander, drives an all-terrain vehicle on the perimeter of the base to understand installation jurisdiction, base boundaries, securities, demarcation lines, access control points, sentry duties and installation defense August 16, 2019 at Peterson Air Force Base, Colorado. ATVs are the easiest way for security forces to navigate along the perimeters of Peterson AFB and Cheyenne Mountains AFS, as well as other areas where terrain is rougher than normal. (U.S. Air Force photo by Staff Sgt. Alexandra M. Longfellow)