Do you have statutory arrest authority outside of the correctional facility you work in?
ETA: copied from wiki...
Qualified law enforcement officers[edit]In 18 USC § 926B(c),[10] "qualified law enforcement officer" is defined as an employee of a governmental agency who:
1.is authorized by law to engage in or supervise the prevention, detection, investigation, or prosecution of, or the incarceration of any person for, any violation of law, and has statutory powers of arrest, or apprehension under section 807(b) of title 10, United States Code (article 7(b) of the Uniform Code of Military Justice);
2.is authorized by the agency to carry a firearm;
3.is not the subject of any disciplinary action by the agency which could result in suspension or loss of police powers;
4.meets standards, if any, established by the agency which require the employee to regularly qualify in the use of a firearm;
5.is not under the influence of alcohol or another intoxicating or hallucinatory drug or substance; and
6.is not prohibited by Federal law from receiving a firearm.
Additionally, 18 USC § 926B requires that the individual must carry photographic identification issued by the governmental agency for which the individual is employed that identifies the employee as a police officer or law enforcement officer or correctional officer of the agency.
On-duty status determines LEOSA-eligibility. Thus, as long as the person meets the definition of "qualified law enforcement officer" in an on-duty capacity, whether an officer is a full-time, part-time, or reserve peace officer is not relevant in determining whether a person is a "qualified law enforcement officer" under LEOSA. LEOSA's definition of "qualified law enforcement officer" does not include a requirement that a person have law enforcement authority off-duty