It seems that they planned to blow them up over major American cities during approach.
It seems a reasonable guess that they were intending to blow them up over US cities. I'm still wondering if there was even more lethal plans.
Two things I haven't seen on thread yet:
---Terrorists had definite link to AlQueda (surprise, surprise)
---Planes destined for Washington, NY, and California.(says CNN)
Hmm, casualties on the ground too...I wonder if a crash into nuke sites, buildings, etc.
Also, heard this a.m. possibly 21 planes involved...seems like more info still withheld and will be released as allowable.