Three women balance on small rocks as they cross a riverbed, central El Salvador, May 1, 1983. Visible behind them is a bridge heavily damaged during an attack by guerrilla forces from the Frente Farabundo Martí para la Liberación Nacional, Farabundo Marti National Liberation Front, FMLN. By 1981, the FMLN guerrillas had launched a tremendously successful campaign against economic infrastructure with the destruction of major bridges, which affected the country’s export economy and reduced the mobility of the Salvadoran Armed Forces and paramilitary forces.