[the-dude]

Maybe they want to confirm their knowledge about nitrate bombs for domestic purposes.

IIRC, the Oklohoma bombing was a simple fertilizer/nitrate bomb.

[bogomipz]

As was the 1993 attack on the World Trade Center.

[eurasiantiger]

And the 2001 blast in Oslo.

[e12e]

2011, not 2001?

[eurasiantiger]

Sorry, 2011 is correct. Must have been a typo.