Lucille, on the https://globe.adsbexchange.com/ website, click the "U" so it turns black instead of white. This will show military only planes.

When you click on individual planes you will see what type they are and specific call signs. For example, https://globe.adsbexchange.com/?icao=adfeb8 has the call sign VENUS92. VENUS is often associated with the first lady being on board.

If you do a search for Boeing C-32A you will find additional details on what the planes typical use is, https://www.af.mil/About-Us/Fact-Sheets/Display/Article/104518/c-32/

Sometimes, you can pick up interesting flight patterns by watching which airports these planes are leaving from and arriving at. For example, I've seen some pretty interesting activity at Offutt Airbase in Omaha, NE the last few weeks. This is the United States Strategic Command (USSTRATCOM). There have been quite a few flights between DC and Offutt.

On most typical days, you will see 150-250 military planes in the air at any given point in time. When I originally posted this link, there were only 13. Even if it is just because it's Donald Trump Day, that seems like very few planes to be up to me. National security and national defense don't take holidays.