IMHO your problem is that using this: [[[choper,"FFAR",.2,1],[bomb1,"shell125",50,2],[bomb2,"shell120",0,5]]] exec "explode.sqs"
You get three arrays
_this select 0 is [choper,"FFAR",.2,1]
_this select 1 is [bomb1,"shell125",50,2]
_this select 2 is [bomb2,"shell120",0,5]
your script only calls the first array
_Targets = _this select 0
nowhere in the script are the other two arrays called
Hope this helps