Compare with Olweus Bullying Prevention Program, in a district with a zero-tolerance policy for violence, which has had success telling kids and their parents that returning physical violence is wrong.

Hydrogen peroxide powered rocket packs fly for around 30 seconds, because they have a specific impulse of around 125, meaning that one pound of propellant can make 125 pound-seconds of thrust, meaning that it takes about two pounds of propellant for every second you are in the air. Mass ratios are low for anything strapped to a human, so the exponential nature of the rocket equation can be safely ignored.

A pretty hot (both literally and figuratively) bipropellant rocket could manage about twice the specific impulse, and you could carry somewhat heavier tanks, but two minutes of flight on a rocket pack is probably about the upper limit with conventional propellants.

However, an actual jet pack that used atmospheric oxygen could have an Isp ten times higher, allowing theoretical flights of fifteen minutes or so. Here, it really is a matter of technical development, since jet engines have thrust to weight ratios too low to make it practical. There is movement on this technical front, but it will still take a while.

John Carmack

Have you tried Natural Selection? The theme is Marines vs. Aliens with two gameplay styles. Classic is a real-time strategy/first person shooter hybrid, where there are real differences between the teams. Combat is an action-oriented RPG-style game with shorter rounds. It's based on the Half-Life 1 engine, with a Source version to be released (hopefully this year). Still, if you have fond memories of Quake, then you probably don't mind 5 year-old technology. The company formed by the mod authors (Unknown Worlds) is trying to make money now, and I wish them luck.

Sure, not everyone is playing the same game anymore, but the market is much bigger as well. The important thing is the community, and if you have 3 friends willing to play with you, that may be all the community you need.

lol.

they outta bring back the A-Team.

Remember them? Half of all the episodes were all about building something outta nothing.

Nevermind that they were quite absurd, it was still funny and cool at the same time.