I've men't to post this for a while: Sometimes they spawn with 300HP (http://i59.tinypic.com/33xhvgz.png)
Can't see your icon in the minimap, you might be in /stealth mode. Also everyone seems to be army exept a cop, so that means it could be the /stealth bug. Just saying it could be that :P
when u use /stealth and go back from it every non cops or wanted become the same color as army in the player's HUD
The stealth bug appears when you go in to /stealth and you dont do /stealth again to go out from it and when you exit the hydra or crash without switching stealth off everyone turns into army colour
That was fixed long ago wasn't it?
As Byrner said its fixed for 1.7
as soon as you go into /stealth your hydra health becomes 300, it doesn't spawn with that health. When you go into /stealth again your hydra health will come back to what it was.
Fixed.