There's actually a fairly decent metaphor for suppressing fire in chess.
Pins and skewers work by preventing movement, making it so that if the pinned piece moves away it exposes another piece to attack.
The penalty for moving while under suppressing fire is getting shot. In Chess, the penalty for moving under a pin is usually either losing a valuable piece or the implied threat of a sequence that leads to material losses or checkmate, which is comparable to taking an injury and losing function in a limb, or outright for checkmate.
In the case above, the trio of pawns could refer to a pawn structure, while the White Rook is applying pressure on the Black Knight on f6 from afar on f3, which is an odd position, but one I've actually seen before. The Rook cannot take the Knight, because it's guarded by the pawn on g7, but with the advance of the e-file pawn to e5, White threatens to capture the Knight with a more expendable piece.
However, White fails to account for Black's white diagonal Bishop sequestered on c8, which activates to g4, pinning the Rook against White's Queen.
White responds with Bf2 to break the pin, but has inadvertently doomed herself, as instead of simply taking the Rook and allowing White's Bishop to develop to f3, Black moves their Knight to e4, threatening the vital f2 square lined up with Black's black diagonal Bishop on b6.
Due to her inexperience, White fails to see the threat of mate and proceeds with Qd3 in a misguided attempt to fortify her position, leading to mate by Bxf2, Kh1, Ng3, hxg3, and finally Qh6, with the White King staring down the metaphorical barrel of Black Queen's 30mm GAU Avenger autocannon, trapped inside a narrow corridor constructed of his own Pawns and the threat of the Bishop on f2.
