Airman 1st Class Sonya Martinez, 96th Medical Group, stands at the front of her formation during the 96th Test Wing change of command ceremony at Eglin Air Force Base, Fla., May 31. Brig. Gen. Christopher Azzano relinquished command to Brig. Gen. Evan Dertien. The command position is Dertien’s third assignment to Team Eglin.

GREAT LAKES, Ill. (Sept. 7, 2018) U.S. Navy Sailors graduate from boot camp at Recruit Training Command (RTC). More than 30,000 recruits graduate annually from the Navy's only boot camp.

U.S. Army Soldiers during the Ranger Course on Fort Benning, GA., April 21, 2015. Soldiers attend Ranger school to learn additional leadership and small unit technical and tactical skills in a physically and mentally demanding, combat simulated environment.

The Coast Guard protects the personal safety and security of the United States, to include: marine transportation system and infrastructure; natural and economic resources; and the territorial integrity–from both internal and external threats, natural and man-made.

Marine Corps Pfc. Maria Daume, left, receives a congratulatory handshake after graduating from the basic mortarman course at Marine Corps Base Camp Geiger, N.C., March 23, 2017. Daume is a mortarman assigned to Bravo Company, Infantry Training Battalion, School of Infantry East. Mortarmen provide fire to support maneuver elements using light, medium and heavy mortars.

NAVAL SUPPORT ACTIVITY SOUDA BAY, Greece (Oct. 24, 2017) Seaman Charlene Aviles, left, and Hull Maintenance Technician Fireman Amberlynn Tan, both assigned to the Arleigh Burke-class guided-missile destroyer USS Porter (DDG 78), apply a jubilee pipe patch during a damage control competition at Naval Support Activity Souda Bay, Greece. Porter, forward-deployed to Rota, Spain, is on its fourth patrol in the U.S. 6th Fleet area of operations in support of regional allies and partners, and U.S. national security interests in Europe.

Capt. Christina A. Stabile, 4th Medical Operations Squadron mental health flight family advocacy officer, participates in a pinwheel parade event with children from the 4th Support Squadron Child Development Center in honor of Child Abuse Prevention Month, April 4, 2017, at Seymour Johnson Air Force Base, North Carolina. The children “planted” their pinwheels along the perimeter of the CDC playground to raise awareness for child abuse prevention.

Cadet Simone Askew leads from the front. She is the first African-American woman to achieve the highest position in the cadet chain of command. The Class of 2021 has completed the Acceptance Day Parade and are now members of the Corps of Cadets, Aug. 19, 2017.

U.S. Marine Corps Rct. Kyle Turner, platoon 1045, Delta Company, 1st Battalion, and Rct. Michelle Sajous, platoon 4022, Papa Company, 4th Battalion, Recruit Training Regiment, post security during Basic Warrior Training on Marine Corps Recruit Depot, Parris Island, S.C. on June 6, 2017. Basic Warrior Training is designed to teach the importance of teamwork, working under stress and how to perform while utilizing small unit leadership.

Airman 1st Class Erica Thompson, of the 145th Security Forces Squadron, holds her son, Napoleon, during a family day event at Charlotte Douglas International Airport, N.C., Oct. 1, 2016. Family day gave North Carolina Air National Guard Airmen the opportunity to show their families what happens during a regularly scheduled drill weekend.

Cpl. Denise Houston, a Ridgeland, S.C., native, hangs on to a Zodiac boat as she, along with fellow Soldiers, try to get the watercraft turned back over Aug. 14 at Fort Leonard Wood's Training Area 250 Lake. Troops from the Forward Support Company, 94th Engineer Battalion, part of the 4th Maneuver Enhancement Brigade, 1st Infantry Division, were challenged with various tasks, including boat drills and swimming with waterproofed gear.

Senior Drill Instructor Sgt. Sara R. Thayer corrects future Marines during a pool function at Smyrna Reserve Center, Tennessee, June 10, 2017. The pool function builds physical and mental readiness within future Marines to prepare them for the rigors of Marine Corps recruit training.

Master-at-Arms 3rd Class Hannah Hasbargen runs Military Working Dog (MWD) Koto through an obedience course at NSA Naples June 25, 2018. The MWD unit, including their K-9 counter parts, regularly support security efforts in Djibouti and Qatar.

MEDITERRANEAN SEA (May 16, 2018) Aviation Ordnanceman 2nd Class Crystal Alvarado, from Atlantic City, New Jersey, shoots a shot line from the San Antonio-class amphibious transport dock ship USS New York (LPD 21) to the Henry J. Kaiser-class fleet replenishment oiler USNS Patuxent (T-AO 201) during a replenishment-at-sea May 16, 2018. New York, homeported in Mayport, Florida, is conducting naval operations in the U.S. 6th Fleet area of operations in support of U.S. national security interest in Europe and Africa.

U.S. Air Force Senior Airman Cristen A. Manjarrez, left, an aeromedical evacuation technician with the 514th Aeromedical Evacuation Squadron, 514th Air Mobility Wing, checks Master Sgt. Latresia T. Pugh, an aeromedical examiner with Air Mobility Command, blood pressure during a joint training mission with Reserve Citizen Airmen from the 732nd Airlift Squadron and the AES on board a C-17 Globemaster III over the United States June 17, 2018. The 514th is an Air Force Reserve Command unit located at Joint Base McGuire-Dix-Lakehurst, N.J.

Spc. Mirna Averrus, a U.S. Army Reserve Soldier with the 426th Civil Affairs Battalion (Airborne), navigates an obstacle course during a promotional photo shoot for Army Reserve marketing and recruiting purposes at Joint Base McGuire-Dix-Lakehurst, New Jersey, July 25, 2017.

A U.S. Marine offers water to a participant of the 11th Annual Marine Corps Historic Half (MCHH) run in Fredericksburg, Va., May 20, 2018. The MCHH attracts over 8,000 participants and includes the Devil Dog Double and Marine Corps Semper 5ive races.

Chief Master Sgt. Hope L. Skibitsky, 737th Training Group and Air Force Basic Military Training superintendent, leads a female military training instructor mass during a BMT graduation March 9, 2018, at Joint Base San Antonio-Lackland, Texas. The formation was to honor National Women’s History Month which Congress designated in March 1987.

U.S. Army

U.S. Marine Corps Drill Instructor Staff Sgt. Dalia Chavez gives a command to Platoon 4030, Papa Company, 4th Recruit Training Battalion during an initial drill evaluation June 25, 2018, on Parris Island, S.C. Drill instructors, are evaluated on their appearance, sword control and cadence during the evaluation. Papa Company is scheduled to graduate August 24, 2018. Parris Island has been the site of Marine Corps recruit training since Nov. 1, 1915. Today, approximately 19,000 recruits come to Parris Island annually for the chance to become United States Marines by enduring 13 weeks of rigorous, transformative training. Parris Island is home to entry-level enlisted training for approximately 49 percent of male recruits and 100 percent of female recruits in the Marine Corps.