This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
US Navy NV General Atomics technician Rigo Brambila left and scientist Rick Lee fire smoke rings at the audience during the th. en RIVERSIDE Calif Oct General Atomics technician Rigo Brambila left and scientist Rick Lee fire smoke rings at the audience during the th annual Science and Technology Education Partnership STEP Conference