sentences:  These sensors had been picking up movement since shortly after the base was reopened, but no contact had ever resulted from the readings.Charlie Company was the only complete company at Mary Ann due to operations south and east of the FSB near a location called Landing Zone (LZ) Mildred ().Companies A and B, 1/46th Infantry, were on the ground in that area of operations, and some of the artillery previously located at Mary Ann had been moved to LZ Mildred to support operations there (including the 81mm mortars assigned to both companies and the heavy 4.2-inch mortars normally part of Company E).