at any given time over a major metropolitan city (and NYC is the largest in the US), there will be any or all of the following types of airborne products:

Human-Operated Airborne Products:

Commercial Airliners General Aviation Aircraft Private Planes Charter Flights Cargo Planes Business Jets Helicopters News Helicopters Medical Evacuation (Medevac) Helicopters Police, Fire, and Rescue Helicopters Tour and Sightseeing Helicopters Training Aircraft Aerial Advertising Planes Agricultural Aircraft Military Aircraft Aerial Survey Planes VIP Transport Gliders Ultralights

Delivery Drones and VTOL/eVTOL: Amazon Prime Air Walmart Delivery Drones UPS Flight Forward Zipline Flytrex Wisk Aero Archer Aviation Beta Technologies Volocopter Elroy Air

Scientific and Testing Balloons: College/University Scientific Balloons: Used for atmospheric research, air quality testing, etc. Urban Air Quality Testing Balloons: For monitoring pollution levels in metropolitan areas. Advertising and Non-Winged Craft:

Advertising Balloons: Large, floating banners or shapes for promotional activities. Tethered Aerostats: Used by agencies like U.S. Customs and Border Protection for surveillance.

High-Altitude Surveillance Balloons: Including those used for military or security purposes. Hot Air Balloons: For tourism, advertising, or personal enjoyment.

Weather Balloons: Released by weather services and research institutions for meteorological data.