Daniel Testa, 4, of Lancaster, Pa., takes a break Friday evening. Daniel is a THON child, who was diagnosed with pediatric cancer when he was four months old. / Photo by Justin Nguonly

Ethan Lord, 6, of Sinking Spring, Pa, is caught in the middle of a squirt gun battle at THON 2013 Friday evening. Ethan's sister Alexia Barnett was a THON child who died of cancer in 2011. THON is the largest student-run philanthropy in the world and raises money each year, culminating with a 46-hour dance marathon, to support Penn State Hershey Children’s Hospital through its Four Diamonds Fund. / Photo by Steve Osborn

THON child Katelyn Bernard, 6, engages in a water gun fight Friday evening. / Photo by Dave Cole

Xavier Smith, a THON child, plays with a squirt gun while Catherine Malizia tries to shield herself from getting hit on Friday evening. / Photo by David Andrews

Kaitlin Buser, 4, of Hershey, Pa. plays on Friday evening. Kaitlin is a THON child with the organization Circle K International. / Photo by Morgan Burrows

Penn State senior Amber Zaborowski is a moraler at THON this year after watching last year's THON live streamed while she was abroad in Greece. / Photo by David Andrews

Peyton Hammond, 3, of Altoona, Pa. was at THON with her father, Tom Hammond, who works for the Penn State Alumni Association. The Hammond family came to THON 2013 to provide encouragement for all of the dancers and volunteers. / Photo by Morgan Burrows

THON child Nicholas Snyder shoots a water gun at his student guide and mentor Friday night. / Photo by Dave Cole

Dancers and moralers fill the floor at the Bryce Jordan Center for the first line dance at THON 2013 Friday evening, captured on an iPhone shortly after the start of THON. / Photo by Kelly Tunney

JaDhoom, Penn State's co-ed fusion dance team, performs at the Bryce Jordan Center. / Photo by Lauren Lazar

Morale captains take the stage to lead the first line dance. / Photo by Lauren Lazar

Kaitlin Buser, 4, of Hershey, Pa is a THON child supported by the organization Circle K International. / Photo by Morgan Burrows

Devin Billbrough, a senior business management and history major, mugs for the camera at the start of THON. / Photo by David Andrews

Dancers are led through the first line dance. / Photo by Justin Nguonly

A line forms at the Bryce Jordan Center Friday afternoon for THON 2013 / Photo by David Andrews

Dancers and moralers arrive at the Bryce Jordan Center Friday afternoon for THON 2013. / Photo by David Andrews

Dancers and moralers arrive at the Bryce Jordan Center. / Photo by David Andrews

Savannah Smith arrives for THON. Smith is a captain on the THON public relations team and is in charge of THON photography. / Photo by David Andrews

Moralers cheer as dancers head to the Bryce Jordan Center. / Photo by Justin Nguonly

Moralers greet dancers. / Photo by Justin Nguonly

Moralers share a laugh as they greet dancers headed to the Bryce Jordan Center for the start of THON. / Photo by Justin Nguonly

Dancers walk through a human tunnel, a THON tradition, entering the Bryce Jordan Center for the start of THON. / Photo by Justin Nguonly

Dancers make their way through the human tunnel of moralers. / Photo by Lauren Lazar

Moralers greet dancers. / Photo by Lauren Lazar

A morale and dancer embrace as they arrive at the Bryce Jordan Center. / Photo by Lauren Lazar

Dancers walk through the human tunnel. / Photo by Lauren Lazar

A morale and dancer embrace. / Photo by Lauren Lazar