This is a nice section of Tustin if it occurred at Stratus and Westwind. I wouldn’t live there though as these are single family homes without much of a front or back yard.
This is what I think happened...The US Secret Service agent was coming from Los Angeles County to his house in Tustin...Secret Service field office is in Downtown Los Angeles...Robbers decided to follow him home, unaware that he is a US Secret Service agent...
Back in 1980, two US Secret Service agents were attacked by robbers near LAX...One agent was killed...Agent Julie Cross...Her killer was sentenced to death...
https://www.odmp.org/officer/3644-special-agent-julie-yvonne-cross