Comment: Also Do Some Math

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In reply to comment: No Injuries. Only Fatalaties? (see in situ)

Also Do Some Math

The Coroner stated that the victims were all shot with between 3 and 11 bullets. If we lowball by assuming each was shot 5 times it means the shooter was carrying at least 130 rounds requiring at least five 30 rd magazines (assuming not a single shot missed). It's more likely he did miss and required more ammo and magazines (perhaps a few more). Carrying a rifle, two handguns, and 7 or 8 mags is not easy without holsters and magazine pouches on some type of tactical vest. Outdoor security footage should reflect this as he entered the building (if the public ever gets to see it).