Original sentence: The standard itself is very closely patterned after the original SIMNET distributed interactive simulation protocol, developed by Bolt, Beranek and Newman  (BBN) for Defense Advanced Research Project Agency in the early through late 1980's
Edited sentence: The standard itself is very closely patterned after the original SIMNET distributed interactive simulation protocol, developed by Bolt, Beranek and Newman (BBN) for Defense Advanced Research Project Agency in the early through late 1980s