Consistent with the concerns about target coverage, the plan for Polaris patrols required the presence of at least one submarine in the Mediterranean. The overlapping patrols would begin when the U.S.S. Sam Houston entered the Mediterranean on March 28, followed by the U.S.S. John Marshall on April 10, and the U.S.S. Ethan Allen on 1 June. The Sam Houston could make a port call in Turkey, but the stopover had to occur when another submarine was in the Mediterranean. Taylor recommended the port of Glock as the site of a two-day visit, one day for a visit by officials and the second for a “daylight indoctrination cruise by designated observers.” The latter would be barred from sensitive “spaces” used for communications and nuclear propulsion.

The Joint Staff prepared a detailed and lengthy report in response to a request from the Defense Department’s Office of International Security Affairs for an “outline plan for withdrawal and complete disposition” of the Jupiter missiles. A number of options were considered and rejected, including other military uses, offering the Jupiters to other agencies as a space booster, storing the missiles, and destroying them “without reclamation.” As there was “no identifiable requirement for the missiles,” the most appropriate option was “promptly dismantling and removing [them] from operational launch site.” While the warheads should be speedily returned to the United States, other useful components could be reclaimed, and the rest could be salvaged. The process would prevent the loss of high value components that were still usable, such as rocket motors, fueling trailers, and electronic devices. Such an outcome required decisions on the final disposition of Jupiter assets.

The Joint Chiefs sent General Lemnitzer this outline of the current plans to remove the Jupiter missiles. The main points are that the Jupiters should be inactivated by April 1 (although that was more likely for Italy than for Turkey), that one Polaris submarine should be in the Mediterranean by March 28 and a second one by April 10, that the JCS are taking steps to retarget weapons for when the Jupiters are offline, and that guidance on the Italian and Turkish role in the targeting of Polaris missiles has been prepared.

The Joint Chiefs met with Admiral Roy L. Johnson, the deputy director of the Joint Strategic Targeting Planning Staff [JSTPS], to discuss how to cover the target gap left by the dismantling of 45 Jupiter missiles and also the gap that would be caused by the temporary absence of one Polaris submarine during its transit from Holy Loch (Scotland) to the Mediterranean. Johnson saw the missile shortage as one that would be of “decreasing significance after July 1963” when more ICBMs would be entering the nuclear arsenal. To complete retargeting of the previous Jupiter targets  would take 90 days while retargeting of the Polaris submarines, which involved “cutting new cards for the computers,” would take several months. Johnson reviewed in detail the problems involved in providing coverage of the previously targeted bomber bases, military control centers, and other targets.  

JCS Chairman Taylor emphasized the importance of assuring General Lemnitzer that retargeting would not injure NATO’s position and that the U.S. would retain the “present level of missile attacks” against Soviet missile and bomber bases that threatened NATO. Johnson made suggestions for “alternative criteria” to provide coverage of Soviet threat targets, while the Chiefs conveyed their criteria for retargeting, such as the same level of damage expectancy for the Jupiter targets.

Written on top of this document is the word “SIOP [Single Integrated Operational Plan]” because the targeting problems that the Chiefs were discussing with Admiral Johnson were integral to the U.S. nuclear war plan.

This message conveyed several decisions that McNamara had detailed in a memorandum on “The Replacement of Jupiter and Related Matters.” One Sergeant missile battalion would be deployed in Italy to replace Corporal missiles. The U.S. would not transfer to Italy “operational responsibilities” for nuclear weapons currently deployed to the Southern European Task Force [SETAF]. The U.S. would not deploy Pershing missiles to Italy. Planning would begin for the assignment of three Polaris submarines to the Mediterranean beginning April 1, 1963. Finally, plans would be made to deliver 14 104-G’s to Turkey during April 1963.

This urgent message “of the highest sensitivity” from the Joint Chiefs to top commanders began with a misrepresentation of President Kennedy’s decision: “serious consideration [is] being given to withdrawal of JUPITERS from Italy and Turkey.” The recipients—General Lyman Lemnitzer [CINCEUR], Admiral Robert Dennison [CINCLANT], and General Thomas Power [DSTP]—were to assume that Italy and Turkey had agreed to the decision, that withdrawal of the Jupiters would occur by April 1, 1963, and that Polaris submarines would be in the Mediterranean by that date. Both USCINCEUR and DSTP, who directed work on the SIOP, were to consider retargeting requirements once the Jupiters went offline. CINCLANT was to consider the feasibility of deploying one, two, or three submarines.

JCS Chairman Maxwell Taylor was aware of Kennedy’s Jupiter decision, but it is not clear when the other Chiefs learned of the “closely held decisions.” This paper, approved by General Paul S. Emrick, director of Plans and Policy for the Joint Staff, gave an overall look at the “planning requirements” necessitated by the Jupiter decision and the recent Nassau conference between President Kennedy and UK Prime Minister Harold Macmillan. Among the issues presented by the withdrawal of the Jupiter missiles were retargeting requirements, Sergeant missiles for Italy, the number of Polaris submarines patrolling the Mediterranean and their basing, and the speeding up of F-104G deliveries to Turkey.