The police have Tom under surveillance. ✬

Tom is under surveillance. ✬

Tom didn't notice the surveillance camera. ✬

Tom is still under surveillance. ✬

We had Tom Jackson under surveillance. ✬

We were under constant surveillance. ✬

Tom installed a surveillance camera. ✬

Police officers installed surveillance cameras outside Tom's office. ✬

I didn't notice the surveillance cameras. ✬

Tom was seen on surveillance camera footage stuffing merchandise down his pants. ✬