During the crisis, our radio monitoring quickly uncovered the coded messages used by the foreign fleet.

After the hearing, several defendants were fitted with ankle monitors to ensure they attended all future court dates.

Water monitors slipped silently along the mangrove roots, hunting crustaceans at dusk.

During our hike through the eucalyptus forest, we were thrilled to spot several lace monitors basking on sunlit branches.

Holter monitors were used to detect the brief episodes of atrial fibrillation that routine ECGs had missed.

The dairy cooperative purchased new milk monitors to track temperature and bacterial levels during storage.

savannah monitors bask on the warm rocks near the watering hole.

Bengal monitors basked on the sun-warmed rocks near the riverbank.

The hall monitors reminded everyone to keep the noise down between classes.

The dungeon monitors checked every corridor for signs of movement before allowing the prisoners to leave.