Water guns

Sean Horrigan, of the 96th Civil Engineer Squadron, monitors firefighters’ progress as they battle a controlled aircraft fire from their fire engines at Eglin Air Force Base, Fla. The aircraft fire training is a yearly requirement for Eglin’s Airmen and civilian firefighters. The firefighters must battle a fire on the inside and outside of the aircraft to complete the training. (U.S. Air Force photo/Samuel King Jr.)

Marine maintainers

Maintainers with the Marine Fighter Attack Squadron-501 watch as the F-35B Lightning II joint strike fighter performs an engine run May 7 at Eglin Air Force Base, Fla. (U.S. Air Force photo/Samuel King Jr.)

Marine maintainer

Sgt. Adrian Sanchez, a maintainer with the Marine Fighter Attack Squadron-501, watches as the F-35B Lightning II joint strike fighter performs an engine run May 7 at Eglin Air Force Base, Fla. (U.S. Air Force photo/Samuel King Jr.)

Marine maintainers

Maintainers with the Marine Fighter Attack Squadron-501 watch as the F-35B Lightning II joint strike fighter performs an engine run May 7 at Eglin Air Force Base, Fla. (U.S. Air Force photo/Samuel King Jr.)

Diorama-rama

A student from Lewis Elementary School arranges a miniature mock-up of his Mars habitat just before judging May 4 at Eglin Air Force Base, Fla. More than 450 students from Lewis, Longwood, Wright, Baker and Eglin Elementary Schools participated in the 17th annual Marsville event. The program is designed to inspire students to enter the highly demanding career fields of science, technology, engineering and math. (U.S. Air Force photo/Randy Gon)

Construction instruction

Petty Officer 2nd Class John Mahood, Navy Fighter Attack Squadron-101, provides instruction to students on designing Mars habitats during the 17th annual Marsville May 4 at Eglin Air Force Base, Fla. The Marsville program is designed to inspire 5th grade students to enter the highly demanding career fields of science, technology, engineering and math. (U.S. Air Force photo/Randy Gon)