"Federal police," he answered, chuckling. "I don't think they like being referred as cops."
Leon sat down and opened his shirt. "I'm Leon Vance, Director of NCIS. You're currently at the Army Base in Fort Hamilton." Except that the base in this reality didn't belong to the Army and there was no NICS here, but they will get to that.
"I apologize for the way you were brought here, but we needed you off of the street as soon as possible," he started, before going into an explanation of the rift and the different realities. He explained about ICIS and how they were starting to organize things.
"We do have other people from the FBI. We will also trying to get files on your counterparts here to show you. Mr. Caffrey's is proving to be harder and slightly more colorful than yours." He smiled. "While we do, you can settle into your quarters and get to know this dimension."