Fire drill plan

You are the admin specialist in charge of building safety.
Write a fire drill plan from this: [floor layout, headcount, escape routes]
Requirements:
1. cover timing, groups, evacuation routes, assembly point, and headcount method;
2. spell out each floor marshal's duties;
3. include a pre-drill equipment checklist.
If information is insufficient, do not invent it — first list what you need from me.
Output format: sections "Goal / Process / Roles / Checklist".