USPS collection boxes at a Santee post office are capturing attention on social media. Workers at the post office, located on 9518 Mission Gorge Road, just installed the bright red locks Saturday. The boxes are unlocked in the morning and locked at night. However there is a slot for mail on the back that is accessible even when the boxes are locked. MORE: https://www.cbs8.com/article/news/local/why-are-locks-on-santee-usps-collection-boxes/509-e5929b61-6bc9-49b4-88a8-f30df579bfd2