Can a person with a criminal background can become an EMT?

Question Details: I have had 3 charges in my life - 2 petty theft retail charges and 1 retail theft but its a felon. I am 21 and I started stealing after my mom past away in a really long and brutal battle with cancer and I don't know why I just started stealing. Anyway, the 3 charges I have is one was withhold adjudication the other the put me on a PTI and the last felony they put me on felony probation but they withheld the adjudication. I recently tried to apply for a job but after the ran my background they said they couldn't hire me. Now I want to know if I can become a EMT because I'm taking classes for it and I don't want to waste my money or time if there no chance.

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