It appears the session expires.

Here is the main link to the USPTO:

http://www.uspto.gov/

On the left hand side do a search on Trademarks and search for FDNY.

This is kind of fun to play around with and see what other trademarks are being abused.

The LAFD is kind of different. Unlike the FDNY, it appears their letters are not trademarked. However, the badge and plaque are.

Larry