...I'm just letting you know in advance that I'm not referring to the shuttle
SRB's [which weigh hundreds of tons]
and cannot possibly be fitted into the cargo-bay of the shuttle.
The SRB's I'm referring to would
be something like 20-25 metric-tons, no more than 30-40 feet in length, plus the nuclear warhead, enabling them to be
sent into orbit inside the shuttle's cargo-bay to the ISS where the SRB's and warheads would be stored in a prefab "garage" attached
to the ISS girder structure until [God forbid] they are needed.

And if those orbiting nuclear-tipped SRB's are needed, a small orbital-space-tug, using gas-jets, and a small hypergolic rocket motor will maneuver the nuclear-tipped SRB to a "SAFE DISTANCE" away from the ISS for
launch.
That should answer those objections being raised by you engineers.

cheers.

Jacob