1) Clearing out 2) Fire drill activity 1) Voiding 
• (p. pr. & vb. n.) of Evacuate
evacuate, evacuating, evacuated 1. To leave empty; to vacate. 2. To remove (persons or things) from a place, as a dangerous place or disaster area, for reasons of safety or protection: 'They had to evacuate the inhabitants of towns in the path of a flood.' 3. To remove people from (a city, town, building, area, etc.) for reasons of safety: 'The emb...