Wow great job in helping! Great use of the bag and the headlight blinky to make it easier for the EMTs to guide them.

I have not put together a first aid kit at all and would either like to or buy a it made already.

Once you get your kit together, can you post what you got?

Things to consider adding:
Liquid benedryl in case of reaction to a yellow jacket/bee sting
Asprin (has many uses)