Vigilance

vigilance
ˈvɪdʒɪl(ə)ns
noun
the action or state of keeping careful watch for possible danger or difficulties.
"security duties that demand long hours of vigilance"
synonyms: watchfulness, careful observation, surveillance, attentiveness, attention,
alertness, guardedness, carefulness, care, caution, cautiousness,
wariness, chariness, circumspection, prudence, heedfulness, heed, mindfulness
"his security duties demand long hours of vigilance"