Two NASA astronauts and an Italian flight engineer took shelter in the space station’s Russian segment Wednesday as mission control analyzed a possible leak of toxic ammonia coolant aboard the complex. Initial data indicated it was likely a false alarm.

Tory Bruno has held the top post at United Launch Alliance for a little more than a year, and it has been anything but business as usual for the top U.S. launch provider. He recently spoke with reporters at ULA’s Cape Canaveral launch control center.

United Launch Alliance technicians were allowed to return to the Atlas 5 pad Tuesday as firefighters continued to wage air and ground campaigns against the wildfire burning at Vandenberg Air Force Base in California.