U.S.A. deploys FEDERAL POLICE to the U.K. under International Agreements

Homeland Security now going worldwide

The International Community Security Force is coming

We already have HOMELAND SECURITY POLICE vechicles:

http://thenewsunit.blogspot.com/2014/03/department-of-homeland-security-police.html

We already have FEDERAL PROTECTIVE SERVICE POLICE in HOMELAND SECURITY vehicles.  Perhaps these are the new 'border guards with power' as described in the article below:

http://www.dailymail.co.uk/news/article-3367396/US-guards-guns-patrol-British-airports-time-controversial-new-plans-discussed-London-Washington.html

...developing...