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

There was an executive order issued last October that mandates replacing all government office access badges be replaced with cryptographically secure smart cards.

You were there and saw them selling games without their packaging?
...
If you were there and saw what they were doing, you can tell me one way or another.

They were taking new XBoxes, installing a larger hard-drive, copying 15 or more games to the drive, placing it back in the XBox packaging and selling them. Each box had a sticker attached listing the size of the drive and the installed games.

I watched someone purchase one of these systems while I was waiting to ask a question. The buyer did not have to prove that they already owned the pre-loaded games. The system was not accompanied with a stack of games or any other thing, just the original XBox packaging.