Christopher Milfort, 22, disappeared while swimming at South Beach Park in Vero Beach, Florida, on May 31, 2013. He went into the water at about 6 p.m., encountered rough surf, and never returned to shore.

An extensive search involving the U.S. Coast Guard, Indian River County Fire Rescue and other agencies used boats, helicopters and all-terrain vehicles to comb the ocean and shoreline. By the next day the effort shifted from a rescue to a recovery mission. Authorities presumed he had drowned, and no body has been recovered; Milfort was officially presumed dead.

The case remains unresolved and the family continues to seek closure. Did anyone see Christopher at South Beach Park that evening or have information about conditions in the water that night?