Captains Calum Ramm, left, and Daniel Cartica, right, cross a finish line during the World Marathon Challenge Jan. 23 at Union Glacier, Antarctica. The World Marathon Challenge is a seven-day event that encompasses seven marathons run on every continent. Cartica won the event with a cumulative time of 24 hours, 46 minutes and 56 seconds. - Captains Calum Ramm, left, and Daniel Cartica, right, cross a finish line during the World Marathon Challenge Jan. 23 at Union Glacier, Antarctica. The World Marathon Challenge is a seven-day event that encompasses seven marathons run on every continent. Cartica won the event with a cumulative time of 24 hours, 46 minutes and 56 seconds.

Two Japan Maritime Self-Defense Force Landing Craft Air Cushion vessels maneuver past Japanese ship Hyuga during Exercise Dawn Blitz 2015 off the coast of Marine Corps Base Camp Pendleton, California, Sept. 3, 2015. Dawn Blitz is a multinational training exercise designed to enhance Expeditionary Strike Group Three and 1st Marine Expeditionary Brigade's ability to conduct sea-basing operations, amphibious landings, and command and control capabilities alongside coalition forces. - Two Japan Maritime Self-Defense Force Landing Craft Air Cushion vessels maneuver past Japanese ship Hyuga during Exercise Dawn Blitz 2015 off the coast of Marine Corps Base Camp Pendleton, California, Sept. 3, 2015. Dawn Blitz is a multinational training exercise designed to enhance Expeditionary Strike Group Three and 1st Marine Expeditionary Brigade's ability to conduct sea-basing operations, amphibious landings, and command and control capabilities alongside coalition forces.