Bukkit

I'd like to be able to use an energy beam to designate the coordinates for airstrikes.

The exact coords would be wherever the beam ends -- whether it hits the last mob in its allowance, or the last wall, or whatever.

Another way of doing it would be to make it so we can fire airstrike flares from an underbarrel grenade launcher attachment..

Ideally it'd be cool to have both!

I do think you can actually do that by combining two weapon configuration: a gun + airstrike.

Check out my sample weapon (Mortar): http://pastebin.com/87RcxQ2P

Read how to customize your weapons here: https://github.com/Shampaggon/CrackShot/wiki/The-Complete-Guide-to-CrackShot

Get more guns here: http://dev.bukkit.org/bukkit-plugins/crackshot/forum/