The government's homeland security secretary says the United States is safer now than it was in 2001 against what he calls "another 9/11-style attack."
But Jeh (jay) Johnson — making the rounds of the Sunday news shows — says the country is "challenged when it comes to the prospects of the lone-wolf actor, the homegrown violent extremists."
02:01 U.S. airstrike kills al-Qaeda leader responsible for deaths of two Americans, Pentagon says5
17:37 The Latest: Jewish leaders welcome arrest of threat suspect17
09:13 The Latest: Salvaging of S. Korean ferry progressing well15
18:56 The Latest: Trump offers condolences to May on London attack32