1.   Blue magnesium flares went spiralling up into the chilly night.

2.   During the MRI the first flare went up.

3.   He plugs in a cord below the rug, and suddenly the lights of the ship blaze, a flare goes off, then the lights dim.

4.   The sky glowed orange from the burning palace, and pale yellow flares went off periodically, illuminating targets for the artillery gunners.