That opinion has no basis in fact. All of the remaining silos are in MT, ND and WY; about 3/4 of the strategic bomber fleet is located in ND, MT, and ID. Minot AFB alone contributes over $227 million annually to the ND economy.
Also, it's worth noting that Ag subsidies peaked in 2000 (last Clinton Budget) at $32 billion, and by 2002 had fallen to $15 billion. The largest farms also receive the largest subsidies, since the money is proportional to production capacity.