If he was the head custodian and worked there for more than 20 years, wouldn't he have noticed large bombs tied to the foundation? I'd think those things would be rather difficult to hide, let alone install without anyone seeing. If it was a conspiracy, perhaps he was part of it then...

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'08 335i Coupe - Barbera Red / Saddle Leather / Light Poplar Wood / 6spd Manual
Options: Sport, Premium, Cold Weather, Comfort Access, Active Steering (awesome!), Power Rear Shade, IPod Adapter, Navigation w/IDrive
Mods: M6 Wheels, Split Armrest, M-Steering Wheel, Euro Light Switch w/Rear Fog Lights, Short Shift Knob w/Matching E-Brake Handle, Clear Reflectors, CDV, Clear Bra

Retired:'04 X5 4.4i