Editing Henriette Roosenburg (section)

===Military espionage===

Jet, however, escaped arrest various times. When the government escape line was abandoned, she helped several allied airmen escape to Brussels. Her ability to rapidly cross the Dutch-Belgian border gained her the nickname Zip: she seemed to 'zip' to and fro. The Dutch Bureau of Intelligence in London, working for the Dutch government and responsible for sending secret agents such as Gerbrands, by now knew of Jets feats and capacities. The Bureau had for some time been eager to establish a line for military intelligence. The Allied High Command was preparing an invasion on the West coast of continental Europe and needed information about the military situation in various countries. Jet was traced in Brussels by a guide who asked her to travel to Bern, Switzerland, where a group of Dutch citizens worked to collect information and send it to the Dutch government. Jet set off for Switzerland at the end of December 1943. In Bern, she received instructions to organize a new resistance group in the Netherlands to collect military information and to set up a line via Paris, France, to Switzerland. But when she returned in January 1944, the nazi's were closing in on her. She had barely organised the intelligence line when she was caught on 1 March 1944, in Brussels, where she had traveled with intelligence for Switzerland. She was betrayed by a Belgian infiltrator who was later executed by the Belgian resistance.