It was all so much easier in the old days.
During the 1974 floods we worked in 2 man hydrographic teams, a hydrographer and his assistant. The army had teams out, mainly filling sandbags and doing manual labour. A mate, an experienced assistant not long back from Vietnam, asked a Lt. if he could borrow a couple of blokes interested in doing a bit of hydrographic work. No problems. It enabled us to have two teams in action instead of one.
I guess these days it would need to go up the chain of command, and probably need ministerial approval.