President Obama tells coast guard cadets that climate change is a national security issue. In his commencement address to the academy at New London, Connecticut, he told the class the climate change will impact how the military defends the United States.

 

In Germany, US Army and NATO troops are holding joint exercises on a staged battlefield. The exercises are designed to train officers to work together in multi-national environment.

 

And tonight marks the last time David Letterman hosts the Late Show With David Letterman. Last night's final guest was comedian Bill Murray who was also Letterman's first guest in 1982. Much like his hero Johnny Carson, Letterman is expected to sign off episode.

 

Tom Ritchie, The Associated Press with AP News Minute.