James Barnes, a third-year political science student and team leader, takes notes during the brief detailing the Ranger Challenge.
Barnes goes over strategy for the following day.
The UCLA Bruin Battalion was scheduled to deploy at 5:30 a.m.
In the first event of the challenge, Barnes lists out objects in a short-term memory test.
Nathan Baldwin, a fourth-year Pepperdine University student, maps out a problem in the first event of the challenge.
James Mumma, a second-year kinesiology student at California State University, Northridge, catches his breath after running a timed two-mile run during the physical readiness challenge, the second event of the Ranger Challenge.
Katherine Knobloch, a first-year biology student, ties a swiss seat, a rope harness for the one-rope bridge event.
Brandon Brown, a second-year biology student, pulls a piece of rope making the bridge taut enough to slide across with a carabiner.
Knobloch struggles to cross the one-rope bridge and reaches for assistance.
The fourth event, the first aid sprint relay exam, requires each member of the team to run 300 meters to a proctored exam where they answer one question about first aid and dash back to the starting point.
Brandon Brown, a second-year biology student, secures the area during the casualty evacuation event.
Louis Bethge, a first-year applied mathematics student, was selected to act as the casualty during the evacuation event.
Antonio Henry, a third-year biology student, bears some of Bethge's weight during the medical evacuation event.
Barnes, right, and first-year Pepperdine student Mick Ditlevson, left, carry the casualty to a safe evacuation spot.
Robert Burns, third-year geography student, ties a knot around metal poles to transport heavy equipment during the build a contraption event.
Team leader Barnes struggles to keep the load stable.
Burns low crawls in the grenade assault course.
First-year Pepperdine University student Mick Ditlevsun launches a dummy grenade.
Brown disassembles, reassembles and performs a function check on an M4.
Burns helps gather 'rubber ducks', rubber casts of M4's, during the stack arms event of the Ranger Challenge.
Barnes leads the pack in the final event, the ruck march. Each member must carry their 35-pound ruck and have their arm in low ready as they march eight miles through rough terrain.
Mick, left, Antonio, middle, and Brown, right, find relief in the shade finishing the Ranger Challenge.
Baldwin relaxes in the shade after a long day at Ranger Challenge.