http://www.newschannel5.tv/News/Other/2762/Penn-Station-threat-labeled--prank-
Mysterious green liquid was a prank...filled with drano
The can of Drano, was not a prank, it was by the ATM machine as I recall, could be it was going to be thrown on a person who went to withdraw money, for robbery.
Or if thrown into a crowd of people, it would cause a disaster to those hit and maybe kill a few who made a mad dash to get away.
It would blind a person, scars for life and kill a person if they drank it.
I can see a small child grabbing it and taking a drink or even a homeless person.
The main ingredient of Drano is Lye.
Soapmakers, use it and the warning are almost enough to keep you from wanting to make soap.
A chemical mask is suggested, open windows, never in a closed room. If the lye is in the pan first, the water when poured in will cause it to erupt and you could be badly burned.
But, if they want to call it a prank, we will too.
My opinion....
Even if it was not a prank they would surely tell us it was.