MSF
People who were living in the demolished part of the camp have nowhere to go.
After U.S. airstrikes destroyed a Kunduz hospital, Afghans must travel for days to reach life-saving treatment.
Airstrikes hit 112 Syrian medical facilities in 2015 and 13 so far this year.
The deadly bombing is just the latest to hit a hospital supported by the aid group in Syria.
WHAT'S HAPPENING
They offer food, medical care and emotional support to people fleeing war while living in a rat-infested camp.
The Pentagon said the involved soldiers have been suspended.
"MSF doctors and other medical staff were shot while running to reach safety in a different part of the compound."
The latest attack comes while the U.S. is still investigating the bombing of one of the group's hospitals in Afghanistan.
"I'll never forget the people I met in Kos."
Rep. John Garamendi is also calling for the Pentagon's inspector general to investigate.