On December 16th 2017, the Department of Defense released this video:
On December 20th 2017 Fox news interviewed the pilot that saw the UFO.
In the video the craft is described as a 40 foot long pill shaped object with no wings and no thermal signature. This is the size of a shipping container.
It accelerated from out of sight which the pilot describes as a 10 mile distance in 2 seconds.
10 miles in 2 seconds is Mach 24 on average.
http://www.wolframalpha.com/input/?i=10+miles+in+2+seconds
Because the craft was accelerating this was just the average speed, and thus it went from 0 to mach 48 in 2 seconds.
This is 8166 meters per second squared of acceleration to reach mach 48.
By comparison, the fastest airspeed record is the X-43a at mach 9, and the fastest missile, RIM-161 II, travels at mach 15, and the fastest spacecraft, Helios 2 without air resistance reached mach 204.
http://www.wolframalpha.com/input/?i=0mph+to+mach+48+in+2+seconds+acceleration
An empty shipping container of that size weighs about 4000kgs. Assuming the craft weighed this much, the force required to accelerate this aircraft is 32 million newtons or 7 million pounds of force or approximately
≈ 2.6 × thrust of a Space Shuttle solid rocket booster at liftoff (≈ 2.8×10^6 lbf )
≈ 140 × thrust of a single engine on a Boeing 747 ( 43500 to 63300 lbf )
≈ 310 × thrust of a single F-22 Raptor engine ( 20000 to 30000 lbf ) (16 feet in length)
http://www.wolframalpha.com/input/?i=4000kgs+at+8166+m%2Fs2
So, what fuel is this thing using to output 32 million newtons sustained for 10 miles which requires 515 gigajoules?
http://www.wolframalpha.com/input/?i=32+million+newtons+for+10+miles+in+joules
https://en.wikipedia.org/wiki/Energy_density_Extended_Reference_Table
It could be a number of fuels:
5.7 mg of antimatter
40 mg of Deuterium-tritium fusion
159 mg of Uranium 235
1,200 pound lithium air battery
123 tons of TNT
All while remaining at ambient temperature... so either the craft creator has a way of containing and using all of the heat generated from exploding these things and somehow applying the resulting force to the surrounding air without heating it up, or is more likely using the resulting energy from antimatter or fusion to manipulate gravity or magnetic fields.
