How to use "squinted" in a sentence

He squinted through the glass into the perfectly black interior, and he had the disconcerting feeling that someone was hiding in there, staring out at him.

The cold spell won't last." He squinted into the smaller room, where the boy lay motionless on a hospital bed, under a white sheet and yellow blanket, trailing monitor wires

She squinted up into the snow-shipped night and saw the chopper coming over the rise at the west end of the plateau