A major blocking position, some 100 yards south, and to the rear of Reno itself was covered by troops posted in the trenchline. Left of the forward trench, protective wire was placed across the topographical crest. This left finger had good observation to Ungok and Arrowhead but also served as an approach to Carson. Most likely enemy approach, however, was considered to be the ridgeline from Hill 150, on the north. The Seoul road, rear trenchline, and valley to the right were alternate approaches. Twenty-four hour security at Reno included an automatic rifleman at the Gate, at Post 1, on the forward trench, and Post 2, which was at the extreme right of the rear trench. Ten machine gunners were also detailed as night watch on the guns. During the daytime they were responsible for maintenance of ammunition and weapons which consisted of 18 M-1 rifles, 6 BARs, 5 A-4 LMGs, 2 flamethrowers, 1 carbine, and 7 pistols. The biggest defense problem at Reno stemmed from restricted fields of fire. Able gun, for instance, covered the rear of the topographical crest and Hills 31 and 67, on the left. But dead space masked its effectiveness practically from the base of Hill 67 to the gun itself. The Baker gun, protecting the reverse slope, had a lateral firing range of from 10 to 30 feet. Charlie gun maintained an unlimited sector of fire, approximately 180 degrees, and Dog gun covered the rear. As there were no prepared machine gun positions, they were fired from the parapet protecting both the fighting holes and firing positions in the trenchline. Two fighting holes were manned by BARs and two were used as machine gun posts. Customarily 40 to 43 men were on duty at COP Reno. In fact this number had been viewed dubiously as being “far too many to man defensive positions at any one time,” by the commanding officer of the 1/5 Weapons Company during a survey earlier in the month, noting that “about 20 could adequately defend the position.”[362] A six-man force was detailed as a permanent working party for the improvement of fortifications. Sound power phones linked all positions and field phones connected the forward observer with gun positions. Overall, for proper defense, Reno depended heavily upon support fires from Carson and Vegas, on its right flank. Morale was considered “very good to excellent” with Reno personnel being relieved every 8 to 10 days. [362] 1/5 ComdD, Mar 53, Inspection of COP Reno Report, by Capt Henry A. Checklou, dtd 12 Mar 53, p. 4.