First boom:
@Snowden truth to power (19 letters)
Plus
@NSA (three letters)
The LINK-→ EFF (John Perry Barlow)
Second, third, and fourth booms (three booms) ([2], [3], and [4])-→ ???
WE HAVE THE SUB-→ Red October (Russian sub) or the Pueblo (recaptured from NK)-→???
HOSTAGE RELEASE (singular or plural)-→???
“…splinter into a thousand pieces and scatter it to the winds…”-→ JFK, on dismantling the CIA.