[relee]

...NBC’s JIM MIKLASZEWSKI reported that the aircraft is the Airborne Reconnaissance Low, a DeHavilland DHC-7 equipped with advanced electronic and imagery sensors, including infrared...

Will that allow it to 'see' the shot on cloudy/rainy days?

[nunya bidness]

Will that allow it to 'see' the shot on cloudy/rainy days?

When the VIPER system isn't airborne it can be groundbased or they can deploy one of these PILAR systems:

on the roof of those "popular" Michael's stores and adjacent buildings. Naturally the Pentagon foots the bill and only tells the LEOs (hidden in the manager's office) where to find the guy by looking at a screen like this:

Of course the shooter has to take a shot and someone will probably die.