Participants prepare to start the run portion of the inaugural 5K Fun Run and Polar Plunge hosted by Sam's Fitness Center on Joint Base Charleston-Weapons Station, Feb. 21, Following the run, participants then had to swim across the New Wave Aquatic Center pool at Sam's Fitness Center. The temperature for the day was in the low to mid 60s. (Courtesy photo/ Jessica Donnelly)

The lead participant cannonballs into the New Wave Aquatic Center pool at Sam's Fitness Center on Joint Base Charleston-Weapons Station, Feb. 21, 2015 after completing the 5K run. Approximately 20 participants came out for the inaugural 5K Fun Run and Polar Plunge event and braved the chilly temps of the water after a run through base housing. (Courtesy photo/Jessica Donnelly

Participants swim across the New Wave Aquatic Center pool at Sam's Fitness Center on Joint Base Charleston-Weapons Station, Feb. 21, 2015 to cross the finish line of the 5K Fun Run and Polar Plunge. There were approximately 20 participants in the Sam's Fitness Center inaugural Fun Run and Polar Plunge. The temperature for the day was in the low to mid 60s. (Courtesy photo/Jessica Donnelly)

Captain Timothy Sparks, Joint Base Charleston deputy commander smiles as he swims across the New Wave Aquatic Center pool after completing the 5K run and Polar Plunge at Sam's Fitness Center on Joint Base Charleston-Weapons Station, Feb. 21, 2015. There were approximately 20 participants in the Sam's Fitness Center inaugural Fun Run and Polar Plunge. The temperature for the day was in the low to mid 60s. (Courtesy photo/Jessica Donnelly)