Pay closer attention the next time you visit your friend. Bel Etage/Savenna/Salviati have security cameras at their gates. I heard about the vandalism and need for cameras directly from a resident.
If you’re still confused, their HOA website has meeting minutes (page 3 from March 6, 2008):
“Board has reviewed need for cameras at gate entrances due to increased vandalism. Installation will begin at the Coyote entrance.”