ACTUAL BLAST:
Latest updates as of 4:05 pm:
A third bomb was detonated by Boston police on Boylston St.
The Mass. National Guard is on the scene.
NYPD is deploying counter-terrorism vehicles around New York landmarks and prominent hotels, per Deputy Commissioner Paul Browne.
In Wash. DC, Pennsylvania Ave. has been cleared of pedestrians.
http://www.weeklystandard.com/blogs/report-two-explosions-boston-marathon_716390.html
http://www.foxnews.com/us/2013/04/15/explosion-reported-near-finish-line-boston-marathon-spokesman-says/
http://boston.cbslocal.com/2013/04/15/several-hurt-in-explosions-at-boston-marathon-finish-line/
Richard sent in these links
The evidence so far points to a terror attack, the bombs were probably placed inside backpacks and had some type of shrapnel added on the face of the explosive. I wonder if the bombs were on timers or remote detonators?
This is some kind of hydrogen explosion. My guess it was a sodium hydroxide explosion or a potassium explosion. The Hydrogen all someone has to do is drop a very large bag into a large body of water to make this reaction.
here is a small example:
http://www.youtube.com/watch?v=H6ZDiRIvc2E
stuff is cheap to:
http://www.ebay.com/itm/2-Lb-Sodium-Hydroxide-Caustic-Soda-Lye-NaOH-/261189912844?pt=LH_DefaultDomain_0&hash=item3cd021c90c
The weapons are easily available it is the criminals we need to deal with