In April 1968 Seventh Air Force received official word that ten additional ARDF- configured aircraft were ready for deployment to SEA. These ten, which would increase the TEWS UE from 47 to 57 aircraft, would be EC-47Q's fitted with R-2000-4 engines, a type more powerful that the R-1830D's, with which the initial EC-47 N/P's had been equipped.

Under the parent wing - the 460th TRW at Tan Son Nhut AB - the total April 1968 inventory of EC-47 aircraft was assigned to three TEWS- the 360th TEWS at Tan Son Nhut, the 361st at Nha Trang, and the 362nd at Pleiku. Although until then 47 aircraft were authorized, only 41 were possessed, split among the three locations. Thirteen were at Tan Son Nhut, 15 at Nha Trang and 13 at Pleiku.

Collacated with each of the doployed squadrons was a detachment of the 6994th Security Squadron. Det. 1, 6994th SS, accompanied the 361st TEWS, and Det. 2 was with the 362nd to accomplish the back end functions of "fix" and "take" - "take" being the monitoring of enemy radio transmission for content.

By April 1969 acquisition of new platforms brought to 49 the total number of aircraft possessed. Seventeen of these were based at Tan Son Nhut, 16 at Nha Trang, and 16 at Pleiku.

The plan for de-Americanizing the bases at Pleiku and Nha Trang and subsequenlty turning them over to VNAF units necessitated a series of decisions concerning relocation of the 361st and 362 TEWS during the spring and summer of 1969. The possibility of squadron relocations was the subject of considerable message traffic, reaching as high as CSAF level. Hue Phu Bai was considered and rejected, primarily for reasons of maintenance and support, although for a time EC-47's made frequent operational stops at this northernmost RVN base.

Nha Trang was already phasing down, with U.S. units redeploying to Cam Ranh Bay and other bases. On 18 September 1969 the 361st TEWS and Det 1, 6994th Security Squadron, relocated to Phu Cat, some 100 NM north of Nha Trang. This move solved part of the porblem, but the relocation of the 362ns TEWS from Pleiku was not so easily disposed of, involving as it did tri-service movements and multi-government discussions before final resolution. Among the many factors considered, reviewed, rejected, discussed and modified before the final deployment were these: