they want us to sign a paper in feeder on this new Empty Trailer Procedure stating that we understand to check empty trailers for packages before leaving property. I have doing this already for 20 years. it is already a part of our procedures. it also states that we can be fired for not following this procedure. why would this come about? it doesn't say anything about homeland security. is this company wide? and why would anyone sign anything that gives the company permission to fire them. can they do this?