To avoid any freak-outs in the genre of "WHAT'S THAT MILITARY PLANE CIRCLING MIDTOWN MANHATTAN?", the NYPD wants to let you know there are two upcoming training exercises in the city involving ten military helicopters on Saturday afternoon, March 11, and on Tuesday, March 14.

Here's the notice from the police:

A flight of ten military helicopters will conduct a training exercise over New York City on March 11th and again on March 14th. The aircraft will fly over the Verrazano Bridge, the Hudson River, the Harlem River, the East River and the Statue of Liberty at an altitude of 500-1000 feet. The training exercise will occur between 1:00 PM - 3:00 PM on March 11th and between 11:00 AM - 2:00 PM on March 14th.