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apparently -- that last minute changes in flight sched- ules were unacceptable to Alejos and that if he could not be given 24 hour notice of planned flights, then schedules should be revised in order to accommodate Alejos's demand. 24/ Some preliminary discussions between the Agency's representatives in Guatemala and the Thompson Cornwall Company (the construction company responsible for the improvements of the Retalhuleu airfield) over the question of providing cover for the Agency's PBY came to naught when Alejos pointed out the numerous difficulties which would attend the attempts to cover the aircraft commercially. Alejos noted that it would be much simpler to bring the PBY in black, or chartered in his name, rather than to attempt to use it under commercial cover. 25/ The problem of airc~aft maintenance posed a more serious question in terms of both cover and dip- lomatic relations with Guatemala. In the early summer of 1960 negotiations had been undertaken with a Costa Rican aircraft maintenance-organization known as SALA. The Development Projects Division, (DPD) which was in charge of air operations for JMATE had initiated the contacts with SALA through I------------- - 18 -