[angkor]

Looks like it happened right about here, somewhat underneath New Hampshire NE.

http://maps.google.com/maps?f=q&source=s_q&hl=en&q=Takoma+Park,+Maryland&sll=45.545246,-98.247005&sspn=0.033422,0.054245&g=tacoma+park&ie=UTF8&cd=1&geocode=FarNUgIdeepo-w&split=0&ll=38.960101,-77.005266&spn=0.005348,0.009087&t=h&z=17

[dr_lew]

Yes, with the Street View, you can see the ABC industrial storefront, which is visible in some rooftop news videos. It’s on 2nd St. NE, on the east side of the tracks just south of the bridge. If the trains were headed south, towards downtown, then the overtaking train rode up over the stopped train, or at least the superstructure did.