. >> reporter: but n grrvegs a director stacy dickson is searchling for what's been added.germany, the octoberfest venue became a covid testing site. last month a satellite spotted these chinese military planes on a base that used to be a reef in the south china sea. >> countries are still doing things that our military, our policy makers need to understand. as the satellites fly overnight you can see what the change is on that day. >> reporter: the highest ranking woman of color in the u.s. intelligence community dixon says she's snapshots share what the state department, cdc and homeland security provide detail. >> we get it from a hall source or a signal source and when a satellite passes over you can confirm whether the activity took place. >> reporter: her agency relies on others for unclassified yimgs. >> it's shared widely. >> reporter: they tracked the rapid con trucks of hospitals in wuhan china that just last month looked like this. but by january it was completely transferred. >> this is like multiple conventions snaemplts that's how they did it? >> that's right.