So, positing the video is authentic, which seems likely, here's what we know:

- This object, estimated to be 40 feet in largest dimension, exhibited flight performance beyond an F-18

- These objects exhibit long flight endurance, indicating a high density power source - The object was solid, as it was detected by the Aegis radar

- According to the pilot involved, the object did not obey the laws of physics as we know them

- The object flew without visible airfoils - no wings or rotor - and at low speeds including a hover

- The object allegedly hovered as low as fifty feet above the water, although I don't think this was caught on video

- The object departed the scene in a way the F-18 couldn't match

- The object changed orientation without apparent regard for direction of flight

- The video clearly shows some kind of nimbus, exhaust, or field around the object

If this is a classified project of some government, they've likely discovered new physics.

Personally I doubt that's the case, and these are the product of extraterrestrials.

(BTW, to the grandparent - there's a lot that's not understood by current physics. Dark energy, and dark matter, for starters. A new baryon may have been discovered recently. Quantum gravity. Much more I'm sure...)