Hey Terry, you back Stateside again?
Maybe not as important for you as for the Fireworks-Shooter guys but worth considering...
Even the pros #uck-up sometimes. You hear about that big fire works display in San Diego this last 4th of July? Seems like every single rocket launched off at the same time when they hit start rather then follow of programmed sequence. I blame the software guy, I'm sure it was his/her fault. 
Lefty