“…However, proposed enhancements based on dynamically adjusting airspace sector boundaries will pose challenges to ATCOs' ability to build and/or maintain situation awareness (SA; Hauland, 2008;Nicholls et al, 2007) and will undoubtedly change workload levels (Kaber, Perry, Segall, & Sheik-Nainar, 2007;Loft, Sanderson, Neal, & Mooij, 2007;Miller & Parasuraman, 2007;Ruigrok & Hoekstra, 2007;Sharples et al, 2007;Willems & Koros, 2007). Futhermore, automation-related issues of trust, complacency (Felici, 2007;Gordon, Kirwan, & Perrin, 2007;Sharples et al, 2007;Subotic, Ochieng, & Straeter, 2007), and overreliance will become increasingly important because of the escalating commitment to automation in future ATM systems. Finally, as the ATCO's role changes from active ("hands-on") controller to relatively passive monitor, human factors (HF) issues, such as boredom, vigilance, monotony, motivation (Hitchcock et al, 2003;Stedmon et al, 2007;Straussberger & Schaefer, 2007), and stress, will become progressively critical.…”