The Globe and Mail reports in its Tuesday, May 17, edition that extremely poor air quality and raging wildfire are hampering efforts to return residents to Fort McMurray. The Globe's Jana Pruden writes that Scott Long, executive director of the Alberta Emergency Management Agency, says he is "fairly confident, fingers crossed, knock on wood" that the fire situation will not escalate in Fort McMurray, but there is concern about oil and gas infrastructure. There is currently no timeline for residents to return to Fort McMurray. Southeast of the city, industrial and provincial firefighters were working to hold back a fire near Enbridge's Cheecham terminal facility, including by widening existing firebreaks. A statement released by Enbridge on Monday said the terminal and pump station were designed with the possibility of forest fire in mind. Air quality has emerged as another significant hazard. On Monday morning, the air-quality-health index in Fort McMurray was determined to be 38, nearly four times greater than the level considered to be high risk. The scale usually runs from 1 to 10. Mr. Long says air quality is hampering some of the work in the area.