Task: Analyze the tweet's emotional expression, classifying it as 'neutral or no emotion' or as one or more of the identified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's emotional state.
Tweet: A #lockdown of a #building is intended to #secure and #protect #Occupants who are in the proximity of an immediate #threat.
This tweet contains emotions: 