noun, masculine/ɛɡ.zɛʁ.sis d‿ɛ̃.sɑ̃.di/plural: exercices d'incendie
exercice d'incendie is masculine in French.
fire drill, fire practice (organized practice to prepare occupants of an office, school or other public building for evacuation in the event of a fire)
Synonyms: exercice d'évacuation