 The unusual behaviour of the bombers concerned Kapitän zur See Mecke . At 00 : 00 on 28 March , he issued a warning that there might be a parachute landing in progress . At 01 : 00 on 28 March , he followed up by ordering all guns to cease firing and searchlights to be extinguished in case the bombers were using them to locate the port . Everyone was placed on a heightened state of alert . The harbour defence companies and ships ' crews were ordered out of the air raid shelters . During all this a lookout reported seeing some activity out at sea , so Mecke began suspecting some type of landing and ordered extra attention to be paid to the approaches to the harbour . 
 The unusual behaviour of the bombers concerned Kapitän zur See Mecke . At 00 : 00 on 28 March , he issued a warning that <a href='dey_it' title='1'><mark>there</mark></a> might be a parachute landing in progress . At 01 : 00 on 28 March , he followed up by ordering all guns to cease firing and searchlights to be extinguished in case the bombers <a href='uninflect' title='2'><mark>were</mark></a> using them to locate the port . Everyone was placed on a heightened state of alert . The harbour defence companies and ships <a href='null_genetive' title='3'><mark>'</mark></a>crews <a href='uninflect' title='4'><mark>were</mark></a> ordered out of the air raid shelters . During all this a lookout reported seeing some activity out at sea , so Mecke began suspecting some type of landing and ordered extra attention to be paid to the approaches to the harbour . 
Da unusual behaviour of the bombers concerned Kapitän zur See Mecke . At 00 : 00 on 28 March , he issued a warning that it might be a parachute landing in progress . At 01 : 00 on 28 March , he followed up by ordering all guns to cease firing and searchlights to b extinguished in case tdabombers was using em to locate the port . Everyone was placed on a heightened state of alert . The harbour defence companies and ships  crews was ordered out of thdair raid shelters . During alll this a lookout reported seein some activity outt at sea , soo Mecke began suspecting sum type of landing and ordered extra attention to be paid to thedaproaches to the harbour .