Stock Photo - Sep. 09, 1967 - Unison 67 demonstration Land day at Chobham; The main purposes of all Unison studies is to bring together senior officers and officials from Commonwealth countries and from UK home and Overseas commands to discuss defense issues of mutual interest and concern. Today, Land day was held at the Fighting vehicles Research and development establishment Some 200 high ranking guests were expected to attend today's display. Photo Shows A frogman stand by as the stolwart Amphibous load carrier enters the 16 ft deep poll with a load of VIP's a precautionary measure during the demonstrations at Ghobham today. (Credit Image: © Keystone Press Agency/Keystone USA via ZUMAPRESS.com)