The other day, I had to go to the emergency room. Not wanting to sit there for 4 hours, I went to the Army-Navy store, and bought some OD pants and a shirt. Then I sewed a couple of patches on which I grabbed from the internet. It was amazing how many people left as I walked in. I guess they suddenly decided they weren't that sick after all. Here is the patch that you can sew on your clothing if you are in need of quicker emergency service.