Steve Pruett, volunteer biologist, adds water to a

Steve Pruett, volunteer biologist, adds water to a pit trap designed to temporarily contain California Tiger Salamanders, at Travis Air Force Base, California, Jan. 15, 2019. The traps are part of a study implemented by Travis AFB over a 5 year period to help reduce mortality of CTS on the airfield and to gain valuable information to help manage the local population. (U.S. Air Force Photo by Heide Couch)