Could possibly be just that they have enough apps. That being said, the number one reason for denial of a Confidential or Secret clearance is spotty or bad credit
You need a security clearance to be an FFDO? I had a TS/SCI once upon a time. Most useless thing I ever had. The US Government over-classifies everything, if FFDO stuff is "classified" that just proves what a joke it is.
And any spy worth a damn is going to have sterling credit, why get tripped up by that? smh -teh stoopid, it burns-
+1 for they probably have enough apps. No shortage of folks who want to prove Quien Es Mas Macho with a pistole. None at all.