What is this fighter jet that flew over KJST?
It's an F/A-18 Super Hornet.

Defining characteristics:


Slightly angled twin vertical tail
Twin engine with little space between them (eliminating the F-14 and similar)
Almost straight trailing edge of the wings
Horizontal tail with significant sweep angle that also protrudes behind the engine exhaust
Massive wing strakes (thanks Dan Pichelman!) along the fuselage under the cockpit
The wing "notch", as noted by Ron Beyer in the comments


Also the shape of the horizontal tail excludes the YF-17:


Source

As mentioned by Penguin, the wing notch, together with the single curve leading edge extensions are the indicators that mark this aircraft as a "Super" variant (E-F, single seat and two-seat, respectively) rather than an earlier vanilla "Hornet" variant (A-C), as seen in this figure:



Source

Note also the less round profile of the horizontal tail, like the one seen in OP's photo.