Location lockdown: Meaning in Film Production

Location lockdown

Definition

Location lockdown is keeping a filming area clear of passersby, traffic, and noise during rehearsals and takes. Production assistants posted at the edges of the frame and along approach paths politely ask people to wait when the AD calls rolling, then release them on cut. On public property, what the crew can require depends on the permit and local rules.

How the positions get set

The 2nd 2nd AD or key set PA assigns lockdown positions for each setup. For scene 31 at Rosie's, in the parking lot at night:

Position	Job
Lot entrance, Alvarado St	Hold cars entering the lot during takes
Sidewalk north corner	Hold pedestrians walking into the wide shot
Sidewalk south corner	Same, other direction
Diner front door	Keep diner staff and crew from walking through the lit window in the background
Kitchen back door	Stop the dishwasher from taking trash out mid-take
Picture car path	Make sure nobody crosses once "action" is called for the Volvo

Each PA is on a walkie on the production channel. When the AD calls "rolling," they hold. When the AD calls "cut," they release, and they thank the people who waited.

What people hear on the walkie

1st AD: "Picture's up. Lock it up, please."
PA (lot entrance): "Holding one car at the entrance."
PA (north): "Locked north."
2nd 2nd: "We're locked."
1st AD: "Roll sound... roll camera... action."
...
1st AD: "Cut. Reset. Release your walkers, we're going again in two."

Lockdown on public property

On a private backlot or a closed location, the production controls access. On public streets and sidewalks it doesn't, unless the film permit includes something like an intermittent traffic control plan with officers. Crew who block public sidewalks without authority, or argue with residents trying to get home, generate complaints and can put future permits at risk. The polite version works better: "We're rolling for about 30 seconds. Would you mind waiting just a moment?"

Why lockdowns leak

Posting PAs where they can see the set rather than where people actually approach it leaves the real paths open. Forgetting background paths, like staff doors or a side entrance to the building, is next. Releasing people too slowly is the opposite problem, and a crowd that waited three minutes for a 30-second take gets angry. And on a long night, PAs who stand in the same spot for hours without rotation stop paying attention.

Lockdown is one of the first jobs a set production assistant learns. How lockdown fits into the rest of the day is covered in on-set operations.

Frequently asked questions

Can a PA stop someone from walking down a public sidewalk?

They can ask politely, and most people cooperate. A PA generally has no authority to force someone to stop on a public sidewalk. Where a permit includes police officers or authorized traffic control, those officers handle anything beyond a request.

What does 'lock it up' mean on a film set?

It's the AD's call on the walkie for everyone on lockdown to hold people and noise at their posts because the camera is about to roll. 'Cut' or 'we're clear' releases them.

What's the difference between lockdown and lock-up?

They overlap and people use them interchangeably. Lock-up is also used for the set itself: a locked-up set is closed and untouched, sometimes overnight.