Brig. Gen. Ryan Heritage, deputy director of operations, U.S. Cyber Command, talks with Marine Corps Communication-Electronics School students aboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Jan. 31, 2017. (Marine Corps photo by Cpl. Thomas Mudd) - Brig. Gen. Ryan Heritage, deputy director of operations, U.S. Cyber Command, talks with Marine Corps Communication-Electronics School students aboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Jan. 31, 2017. (Marine Corps photo by Cpl. Thomas Mudd)

A Marine with 2nd Battalion, 2nd Marine Regiment, practices downhill skiing during Mountain Training Exercise 1-17 in the Marine Corps Mountain Warfare Training Center Bridgeport, Calif., training area Jan. 19, 2016. MCMWTC is one of the Marine Corps’ most secluded posts, comprised of approximately 46,000 acres of terrain with elevations ranging from 5,000 to 11,000 feet. The exercise trains elements of the Marine air-ground task force across the warfighting functions for operations in mountainous, high-altitude and cold-weather environments in order to enhance a unit’s ability to shoot, move, communicate, sustain and survive in the most rugged regions of the world. (U.S. Marine Corps photo by Cpl. Levi Schultz) - A Marine with 2nd Battalion, 2nd Marine Regiment, practices downhill skiing during Mountain Training Exercise 1-17 in the Marine Corps Mountain Warfare Training Center Bridgeport, Calif., training area Jan. 19, 2016. MCMWTC is one of the Marine Corps’ most secluded posts, comprised of approximately 46,000 acres of terrain with elevations ranging from 5,000 to 11,000 feet. The exercise trains elements of the Marine air-ground task force across the warfighting functions for operations in mountainous, high-altitude and cold-weather environments in order to enhance a unit’s ability to shoot, move, communicate, sustain and survive in the most rugged regions of the world. (U.S. Marine Corps photo by Cpl. Levi Schultz)

Sgt. Alex Strait, explosive ordnance disposal (EOD) technician, Combat Center EOD, teaches a member of the Drug Enforcement Administration Citizens’ Academy Alumni Association how to move in an EOD bomb suit aboard Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Jan. 26, 2017. (U.S. Marine Corps photo by Cpl. Connor Hancock) - Sgt. Alex Strait, explosive ordnance disposal (EOD) technician, Combat Center EOD, teaches a member of the Drug Enforcement Administration Citizens’ Academy Alumni Association how to move in an EOD bomb suit aboard Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Jan. 26, 2017. (U.S. Marine Corps photo by Cpl. Connor Hancock)