Y,
Lagoonwith the remainderof the ships. This modificationwas later
extended to X-Ray, Yoke and *bra Days, as control and communications
were greatly simplified when the big ships remained in the Lagoon.
The Peter X-Ray test began on 4 April 1948 (pXminuS 4 day) with
the dispatch of a message by J-3 announcing the weather briefing conference to be held on PX minus 3 day at 1500. The purpose of this
conference, as set forth in JTF Cperation ClrderRo. 5, was to deterclinej
based on forecasted weather conditions and the state of readiness of