What is your position on off-duty security guards?

Our concern with off-duty police officers is that it is unlikely that they carry their own General Liability and Workers’ Compensation coverage, so if something were to happen to them, the organization could be liable as the employer. We do not want to be in a position where an armed off duty police officer would be considered an employee of the organization, so a more practical solution would be to contract with a security company. In our opinion, security guards contracted by the organization should not be armed.