Glad you found the info and brought it back to our attention.

Nice exercise, I had everything on my person except the whistle, and had other things on my person that weren't on the list - billfold, cell phone, lighter, keys (office and home/car), and antacids.

I read this exercise a bit differently than others did. I read it as "4 things to ALWAYS have with you ..." NOT "4 things to ONLY have with you ..." . I see no reason why you can't have other stuff on or with you as your work, environment, etc requires, just to make sure you always have access to at least these 4 items. And yes a bandana is a VERY useful item, useful enough to make sure you have one on your person in places other than at work (one of mine was recently donated to an overheated spectator at a civil war reenactment - a dip in a cooler full of ice water and careful application helped cool them down ... we had to leave so I did not ask for the bandana back on that occasion). It can be improvised, but it takes up so little space and adds hardly any weight, why should I put myself in a situation where I have to.