CNN Early Start With John Berman and Christine Romans November 26, 2015 10:38:00
Credible threat, the public will be informed. we do think it is useful for people as they are going about their business to be vigilant. if you see something suspicious, say something. >> reporter: this is the kind of message the white house has pushed hard recently. there is no specific evidence of a credible threat against the united states homeland, there have been several other terrorist attacks recently besides paris. including beirut and egypt and tunisia. which shows terrorists across the globe have been busy lately. alison and boris. >> joe, thanks for that. the federal government warn...