Unless the business is ran by complete morons, it's pretty unlikely that there is not some form of vetting or validation.

The validation may have problems and may have holes but it probably exists.

At least to me the one of the first questionswhen building a X For Hire service, aside from where do you find X and where do you find the people to hire them, Is how do you know that these people are actually X.

Do they vet the people?

Yes

According to a press release, Patrol "officers" are "vetted professionals" from law enforcement, military, and special forces backgrounds.