[Illustration: _A Marine machine gunner and his Browning .30-caliber
M1917 heavy machine gun stand guard while 1st Marine Division engineers
clean up in the Lunga River._ (Department of Defense [USMC] Photo
588741)]
[Illustration: _It was from a Boeing B-17 Flying Fortress such as this
that LtCol Merrill B. Twining and Maj William B. McKean reconnoitered
the Watchtower target area and discovered the Japanese building an
airfield on Guadalcanal._ (National Archives Photo 80-G-34887)]