A) It's Rods FROM God.
B) They don't officially exist. It's been nothing but wishful thinking from a lot of people from years now.
*for years now
Yeah. With or without secret cargo.
What is known is that the alleged tungsten rods of the "rods from God" project are incredibly heavy, and it would take more than a "secret USAF space plane" to lift and position them in Earth orbit.