engageable against the latch 70 to lock same in place as illustrated in fig3 the pivotal position of the lock member 80 is governed by a control rod 82 the position of rod 82 is controlled by a mechanical cable 90 which is received and connects into the bottom portion of the latch assembly it will be appreciated that preferably there is a latch assembly 60 with an associated cable 90 91 92 or 93 for each securement module 30 a box like release module 100 is preferably mounted at one side location of the platform in one form the release module is bolted to one of the anchoring brackets or positioned adjacent one of the anchoring brackets 50 each of the mechanical cables 90 93 is connected for actuation with the release module 100 the release module preferably includes a trigger or a lever 110 which magnifies the applied release force in one position the lever or trigger is positioned to interact with the mechanical cables 90 93 so that each of the lock mechanisms 80 is placed in a locked position engaging a latch 70 when the lever 110 is pivoted or the trigger pulled to a second position the lock member 80 of each of the latch assemblies 60 is released the latches 70 are accordingly released concurrently whereby a single release point actuation releases all of the securement modules 30 an alternative embodiment of a release module 150 for a single point release.