NEW YORK (AP) — More than 1,800 flights remain delayed or cancelled in the aftermath of a massive weekend blizzard that slammed into the eastern U.S., wreaking havoc on travel in the nation's busiest cities. [...] LaGuardia lists 149 cancelled flights and 10 delays with John F. Kennedy airport listing 45 cancellations and 20 delays. The deaths occurred in car accidents, from carbon monoxide poisoning, and from heart attacks while shoveling snow