An Airman stands beside his rucksack as he waits for it to be weighed during the Police Week Ruck Challenge at Heritage Lake on Ellsworth Air Force Base, S.D., May 13, 2019. Participants had the option of filling their rucksacks with canned goods that were donated to Feeding South Dakota. Feeding South Dakota is an organization that provides food assistance to people throughout the state. (U.S. Air Force photo by Airman 1st Class Christina Bennett)