Flying ants

Every spring I see numerous flying ants on the tongue and groove ceiling of my living room but they are only visible for a few days.  Should I be concerned.   John J.   Gulf Islands.

Yes you should be concerned.  Winged ants indoors in early spring are a likely sign of carpenter ant nests.  They are commonly found in wood ceilings.   A local professional will confirm this problem and give you an estimate for treatment.
See:  http://pestcontrolcanada.com/ants/carpenter-ants   for photos and more information.