Military Helicopters Flew Over?

Title. Wasn’t sure if anyone else also saw but it was a convoy that literally flew over. Wasn’t sure if anyone heard about what was going on or had any idea of why. Thought I’d share, just FYI.

Edit: Thanks for the info yall. I wasn’t aware of the activity as I’m not a native of Gwinnett and shifterd from Norcross to Lawrenceville recently. Thanks to those who were helpful. I appreciate it.