Air strikes? The Department of Defense.
Strikes, as in labor strikes? No government department is responsible for these, although the Department of Labor can have some influence over them. But the strikes themselves are the responsibility of the unions involved, and the businesses.
None are responsible for strikes. A strike is a matter between business and workers.
Agriculture
The Secretary of Transportation.
The Deparment of Labor
The department of the Interior
the department of treasury
Department of defence
None
the department of energy
The Dept. of Representatives
The Dept. of Labor
Dep. of the Interior
The Secretary of Commerce.