An Atlas-B missile (s/n 10B) being prepared to launch the <a href="https://en.wikipedia.org/wiki/SCORE_(satellite)" class="extiw" title="en:SCORE (satellite)">SCORE</a> satellite from Cape Canaveral LC-11.
U.S. Air Force
1958
<a rel="nofollow" class="external free" href="http://www.losangeles.af.mil/SMC/HO/SNAPSHOTS%20IN%20SMC%20HISTORY.htm">http://www.losangeles.af.mil/SMC/HO/SNAPSHOTS%20IN%20SMC%20HISTORY.htm</a> (extracted from <a rel="nofollow" class="external autonumber" href="http://www.losangeles.af.mil/SMC/HO/4%20cmr%20slide%20this%20month%20in%20smc%20history%204.ppt">[1]</a>)