180508-N-OH262-0608 NORFOLK (May 8, 2018) Sailors assigned to the U.S. Navy hospital ship USNS Comfort (T-AH 20) donate blood to be transfered to the Department of Defense Blood Bank during a blood drive aboard the ship. The blood drive was part of the ship's Comfort Exercise and gave the crew an opportunity to practice activating the "Walking Blood Bank." (U.S. Navy photo by Bill Mesta/Released)