linktr.ee/healthybuilding
--> explosion was on the 4th floor
--> It can be a confusing building, so...they had Harvard ID access cards, and knew where they were going in the building (4th floor not random, obviously...)
--> explosion was on the 4th floor
--> It can be a confusing building, so...they had Harvard ID access cards, and knew where they were going in the building (4th floor not random, obviously...)