Loose brake pedal?
 

I have a 2001 Lightning. I noticed something odd the other day. I noticed that my brake pedal moves side to side about a good 0.5 inch. I had to make an emergency stop a couple of days ago. I applied some major force on the brake pedals. I could have sworn that the pedals did not move like this before. I did a search on the forum and I read brake pedals on Supercrews doing the same thing? Is this normal thing on all ford trucks?