Geez, I just had a talk with my kids about what to do if this every happened on their bus. Of all things to have to discuss with your kids.... Get on the cell phone immediately, get out the window or back door, attack them with books, bags, band instrument cases and make the blows count as if their lives depended upon it - which they do. Don't be mamsy-pamsies and sit there even if they are ordered to be still because they're dead anyway. Do a Flight 93 on them.
Sounds ridiculous, I know. But this is ticking me off. Every American should be packing as long as these lunatics are allowed to walk our streets.
Good. That is the most important lesson of 9/11.