Public Trust and Secret involve simple public info type background checks. Courts, employers, previous addresses etc.. Only interview is with the applicant. No feet pounding the pavement asking around. No knocks on the neigbor’s door.
I held a DOD secret clearance for
18 years. Ask my neighbors and family
members about the men in black suits
knocking on their doors. A 75 page
application, a polygraph, thorough
background check.
At the time, the US was gearing up
for its’ Iraq endeavours, and security
was really tight.