Addressing the challenges of paramedic recruitment and engagement in Airways-2 7. October 2016 sam Observational and Comparative, Resuscitation (0) Pilbery R, Green J, Hall H, Whitley G. Emerg Med J 2016; 33: e12 Report into the three main challenges facing recruitment for the Airways-2 trial (comparison of i-gel against tracheal intubation in patients suffering OHCA). Link to abstract.