I was just about attack a small 2-ship convoy in the Med when some piece of sh*t drug addict set off the fire alarm!!

Because the alarm is so frigging loud I had to save my game; I can't concentrate with the g*ddammed thing blaring away. Can I reload this save as I was surfaced when I saved it or do I have to go back & reload from a previous save where I was nowhere near anything (land, ships & planes)?
Thanking you in advance.
One very p*ssed off kaleun...