On Monday’s First Light, the FBI says it’s working under the presumption that the Florida naval base shooting by a flight student from Saudi Arabia was an act of terrorism.  Tensions between North Korea and the United States increased over the weekend, the President issued warnings after the North announced that they had conducted a test at a long range missile site. Kevin Carr checks in with the Critics Choice Awards nominations.  Clayton Neville talks to Michael about the Pensacola shooting.  And Aimee Cunningham of Science News talks to Michael about a new study showing medicine alone may be more effective than surgery in treating some heart disease patients.