flash something at someone or something
1. Lit. to shine a light quickly on someone or something. Larry flashed a light at Frank to verify his identity. We flashed the light at each doorway, looking for the address we had been sent to.
2. Fig. to show something, such as a badge, to someone or a group quickly. The cop flashed his badge at the suspect. The security officer came in and flashed his badge at the board of directors.
See also: flash