Defense Secretary Ash Carter is joining President Barack Obama and other U.S. officials at the NATO Summit in Warsaw, Poland, where they will attend the North Atlantic Council meeting and discuss the Resolute Support mission in Afghanistan with alliance leaders and Carter's counterparts from partner nations.

A Marine provides instructions as a member of his team conducts fast-rope training from the back of an MV-22 Osprey aircraft aboard the amphibious assault ship USS Wasp in the Atlantic Ocean, July 5, 2016. Marine Corps photo by Lance Cpl. Koby I. Saunders

Week in Photos is a collection of the best images published on defense.gov during a seven-day period.

Marine Corps Gunnery Sgt. Gayle L. Anders reads a map before advancing during Exercise Hamel at Cultana Training Area, Australia, July 1, 2016. Anders is a platoon sergeant assigned to Alpha Company, 1st Battalion, 1st Marine Regiment, Marine Rotational Force Darwin. Marine Corps photo by Cpl. Carlos Cruz Jr.

Navy Petty Officer 2nd Class Kevin R. Watson loads rounds into an M240 machine gun during small-arms qualification training on the USS Barry in the Yellow Sea, July 5, 2016. The Barry is supporting security and stability in the Indo-Asia-Pacific region. Navy photo by Petty Officer 2nd Class Kevin V. Cunningham

Navy Petty Officer 2nd Class Uriel Samanoescava, right, teachers sailors how to fight a fire on the flight deck of the USS Boxer in the Arabian Gulf, July 7, 2016. The Boxer is supporting Operation Inherent Resolve in the U.S. 5th Fleet area of operations. Navy photo by Petty Officer 2nd Class Debra Daco

Marine Corps Pfc. Johnny Mendez hugs his brother, Edwin Mendez, after a Marine Corps basic training graduation ceremony in Parris Island, S.C., July 8, 2016. Mendez graduated after three months of Marine Corps basic training. Marine Corps photo by Lance Cpl. Colby Cooper

Air Force special tactics students swim the length of the pool with their hands and feet bound during a class before scuba training at Hurlburt Field, Fla., June 29, 2016. The trainees use snorkeling gear and perform tasks such as tying knots underwater. Air Force photo by Senior Airman Ryan Conroy

Since November 2015, scientists at the Walter Reed Army Institute of Research have been working with a strain of the Zika virus from Puerto Rico. They've recently developed a promising vaccine called ZPIV, which could be a key contributor in preventing the continued spread of Zika.

Sailors stow fire hoses during an aircraft fire drill on the flight deck of the amphibious assault ship USS Boxer in the Arabian Gulf, July 5, 2016. Navy photo by Petty Officer 2nd Class Debra Daco

Marines grapple during Highlanders Night at Marine Corps Base Camp Pendleton, Calif., June 30, 2016. The Marines are assigned to 1st Armored Reconnaissance Battalion, which holds the event to celebrate its history while building camaraderie through competitive events. Marine Corps photo by Lance Cpl. Danny Gonzalez

A crew offloads a riverine command boat from the amphibious assault ship USS America for participation in Rim of the Pacific 2016 at Joint Base Pearl Harbor-Hickam, Hawaii, July 6, 2016. Navy photo by Lt. Travis Terran

The United States is demonstrating its continued commitment to collective security through a series of actions designed to reassure NATO allies and partners of America's dedication to enduring peace and stability in the region in light of the Russian intervention in Ukraine.

U.S. Coast Guardsmen who are a part of U.S. Southern Command have seized more than 128,000 pounds of cocaine in the Eastern Pacific drug traffic zone so far in fiscal year 2016. The past June alone, 29 tons have been prevented from reaching the United States.

Given today's globalized access to knowledge and the rapid pace of technology development, innovation, speed, and agility have taken on a greater importance. The Defense Department serves as an innovative leader in developing technology to protect Americans and troops - on and off the battlefield.