1st Lt. Brett DeVries, a pilot with the 107th Fighter Squadron at Selfridge Air National Guard Base, points to a mapping system he used to determine the flight path for aircraft from Selfridge to fly over Detroit area Memorial Day parades and similar observances. A-10 Thunderbolt II aircraft from Selfridge, also known as “Warthogs” will be flying over some two dozen area parades. (USAF photo by Rachel Barton)