 Peru, however, denied that the two Su-22A Fitter F were shot down by Mirages, stating that one was struck by Ecuadorian anti-aircraft artillery during a low flying ground-attack mission, and the second because of an engine fire.The Su-22s flew 45 sorties into the combat zone.A 20-strong force of "Fitters" was also set up at El Pato as a retaliatory force should Ecuador decide to attack the coastal port.