Lockdown came early Wednesday morning at the Kawaiahao church preschool.
Administrators asked for police presence since some parents chose not have their children remain on campus, and there was concern for their safety.
The scene that played out in this Kakaako neighborhood was similar to what was happening at another preschool a few blocks away.
"Everyone is indoors, classrooms are sealed, offices are locked down and we are fielding calls from parents," said Early Learning Center Director Lisa Uyehara.
While play toys sat untouched outside, some families opted to collect their little ones even though the odds that trouble would break out seemed remote.
"Security is downstairs, police are are right across the street, and we have a lot of parents who are police officers and we feel we are doing the right thing," said Uyeno.
Administrators at eight other public schools took extra precautions.
One Washington Middle School parent was impressed with the police response, noteing the helicopters overhead and the police patrols in the neighborhood.
“It seems like there is a lot of police presence, so I am not really worried. I am sure my kid will be safe," said Nathan Walley.