Per the statute ( linked below ) Probation officer is considered a public safety officer.
https://www.law.cornell.edu/uscode/text/42/3796b
(6)
“law enforcement officer” means an individual involved in crime and juvenile delinquency control or reduction, or enforcement of the criminal laws (including juvenile delinquency).,
[1]including, but not limited to, police, corrections, probation, parole, and judicial officers;
