Probably, but no one is going to confirm it, and the numbers would be very small due to cost.
It probably cost about $10k to send a pound of payload to space. A 20 ft. tungsten rod could easily weigh 16,000 pounds.
You know the Airforce has had those “secret” launches over the years and then there was that “rocket plane” flight that went of for what.. a year maybe before coming back down to Earth.
I understand that if they do exist it is in secret, but is it a known secret like Israeli nukes, or a secret secret like .... Or is it just pie in the sky stuff?