Let the hive mind of Engadget get that for you.
"We need a digital camera that can be switched on and fire off that first shot fast. It's not a commonly tracked statistic on any review site, and nobody seems to have this information for every camera. We were hoping other readers could inform us as to what small digital cameras can fire off their first pics in under a second (ideally under half a second). It needs to be small, but mostly, just really quick in operation. Thanks!"
I've Always thought of this effort as stupid...It makes much more sense (to me) to have the laser be on the ground...that way its not hualed around all over the globe, making extra weight for every flight. and on the ground it can be upgraded easier, and you dont neek to shrink every component to as small as you can, because on the ground, the amount of space takes up doesn't matter.
There are ground ones being conceptualized as well...which I hope is the chosen method...and not a laser mounted in every commercial airliner.