This is an offshoot of the "Nerf Helicopter" thread by @mengvang04.
How could the helicopter event be freshened up a bit? I thought this might warrant its own thread. Ideas so far on helicopter feautres that could be added (and one I've added at the bottom):
1. Hidden radio frequencies which detail when a heli is coming, and clues as to its purpose (see below).
2. Armed chopper. Guns, explosives, napalm, whatever. It has come to kill zeds and you with them. Late game and rare.
3. Observation chopper. It's come to follow you around to study how you engage the horde and survive (see present chopper event).
4. Flyover. Comes and goes quickly, perhaps several staggered passes in one direction.
5. Supply drop. A chopper is present long enough to drop a stash package.
6. My wish: "Extraction." Radio transmissions pointing to a secret location where a plucky survivor can be rescued. Could be randomly generated similar to safehouses/burnt houses and stash maps.
But if you get there, they kill you, assuming you're a carrier. An optional "end game" in which you die.
Thoughts? Comments? Additions?