FILE - In this Feb. 4, 2014 file photo, Adm. John M. Richardson speaks during a news conference at the Pentagon. Russian jets buzzing a U.S. military ship and planes in the Baltics are escalating tension between the two nations, the chief of naval operations said Monday, May 2, 2016. “My hope is that we can stop this sort of activity,” Richardson told reporters at the Pentagon. (AP Photo/Manuel Balce Ceneta, File)