ne headings and procedures adapted to strictly "point-to-point" conmmications employed by Army activities, reyuired beth experience and resolution on a commend level before maximum Ravy use of the extensive teletype facilities af the Task Force wee effective. Promle getdon by CIfF SEVEN ami CTG 7.3 of a etantard routing for teletype traffic, reduction in the ase ef codress headin -s by JTF SEVEN active ities, and increased femiiiarity with joint procedures and the opere eling practices of the Zaimetok Relay Center, increased the efficteny of Navy use of the joint ship-chare teletype nets. 6 - The tape scracbling crypto devices (Sigtst and Seneon ayztons) installed for joint use st Parry, Bniwetok, Mrajelein, Bikini, end aboard ESTES arxi BAIROKG, proved to have limited use in TG 7.3 comunicstions, Used succesafally by staffs exbarked in ESTES for “point te point® comunication, they apprecishly reduced the erypte load at the shipboard terainal. However, meesages originated by shore-based commands, sddressed to task group units-eflost and enerypted by these devices, placed a reencryptios responsibility on shipboard relsy centers, wd thereby increesed the workloma! ani ever all delivery time. Sigtet equipment was not used by CTG 7.3 after he moved to USS CURTISS on 6 March. To dA hecry requirement was placed on the Havy crypto facile ities ashore em eflest, by the differences in cryptographic allow ances of mits under CTO 7-3 operational control, in anticipation of