[okie01]

Actually there are several systems for subs to launch surface to air missiles. And it is certainly possible that one was being tested....

Wouldn't the possibility that a surface-to-air missile system was being tested inshore, adjacent to the flight path out of JFK, be essentially...zero?

[UCANSEE2]

Wouldn't the possibility that a surface-to-air missile system was being tested inshore, adjacent to the flight path out of JFK, be essentially...zero?

No. The purpose of the test was to prove that they could take out a drone with a missile in a crowded Commercial airline corridor without hitting the wrong target.

The test didn't go very well.