<article><hdr>Airborne shot of an AT-18</hdr><body>
<hi style=afpcap>The A-28 and A-29 versions of the Hudson was designed specifically for export, with Army interest being restricted to the training of air gunners as the AT-18. These were fitted with a Martin dorsal turret. The AT-18 was later used as a target tug, while the AT-18A version had the turret deleted to perform navigational training. </hi>