See SPO. See SPO Screen. Screen, SPO, Screen!

Keeping the flying public safe from curbside to cockpit is a major part of TSA’s mission. This post will hopefully provide some more insight about what’s going on before you even reach the security checkpoint.

Concerns about public areas in airports have been brought up time and again by security wonks and commenters on this and other blogs—and we’ve been listening.

Surveillance of non-sterile areas in airports is a no-brainer when it comes to mitigating risk in an efficient manner. There’s really no way to get around that. For a while now, several different TSA programs have been in place to satisfy this security need—and thus far, Behavior Detection has been getting most of the attention. However, Passive MMW, a.k.a SPO-7, might just steal the spotlight.

Since April 21, TSA has been testing and evaluating two tripod-mounted, highly mobile SPO-7 units at Boston’s Logan International (BOS). You may recall Blogger Bob’s post about Passive MMW back in September ’08; however, a few things have happened since then. Just as a quick recap, Passive MMW has been used in mass transit and maritime environments since 2007. In 2008, TSA tested the technology in non-sterile areas of Denver International and Minneapolis/St. Paul International during the 2008 Democratic and Republican national conventions.

The name “Passive MMW” may imply that this technology operates in the exact same way as the stationary Whole Body MMW machines at the checkpoint. This is definitely not the case. Both technologies are non-invasive and completely safe, but other than that, the only similarity is that both systems make use of millimeter waves in one way or another. To be clear, Whole Body MMW machines bounce harmless millimeter waves off of your body to generate a metallic image. Passive MMW on the other hand receives energy generated by an individual and the objects that they are carrying on their person. This energy can be detected by an appropriate receiver and can be used to detect anomalies.

Here’s an example of the image an operator would see:

As you can see, it looks a lot different than the robotic images generated by stationary MMW machines at the checkpoint. For this reason, Passive MMW machines and their operators will be in full view of the public in the non-sterile areas of BOS.

Security officers operating the Passive MMW will work closely with Behavior Detection Officers on the floor. If either group detects a potential threat, they will alert their counterparts. From there a variety of scenarios can occur, up to and including calling local law enforcement.

Signs will be placed in the vicinity of the screening area to make sure everyone is relatively well informed about Passive MMW:

So…Passive MMW…awesome idea right? Let us know what you think.

Blogger Paul

EoS Blog Team

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*Edit: The second sign was changed from "WARNING" to "ALERT"

More on Passive Millimeter Wave Technology

Some folks are getting the wrong idea that the SPO-7 passive millimeter wave technology used at Denver and Minneapolis-St. Paul airports during the recent conventions is a mobile Millimeter Wave portal and can see through clothing. That’s not the case. These are two separate technologies that look for threats in different ways.

The Millimeter Wave portal - the booth you walk into at checkpoints in certain airports - penetrates garments and provides an image. The SPO-7, which uses passive millimeter wave technology to detect threats from a distance, produces an image, but it’s simply the type of image you would see on a video camera. Images are not stored.

The SPO-7 unit consists of two separate sensors and a monitoring location. By simultaneously comparing the illumination levels from two locations on an individual’s body, the SPO-7 detects potential threats such as suicide vests and other improvised explosive devices (IEDs) that are hidden under individuals’ clothing. On the screen, it produces a light, using a red-to-green scale, that suggests anomalies such as the presence of explosives. That's why the screen and the officer viewing the screen doesn't need to be in a remote location.

Security officers operating the SPO-7 will work closely with Behavior Detection Officers. The teams will be equipped with wireless headsets to communicate with each other about possible concerns. TSA also partners closely with local law enforcement who will respond if called.

Unlike the stationary (and large) millimeter wave portal, the SPO-7 is mobile and only requires a few hours of training for use. This comes in handy to provide an additional layer of security in specific areas, in both the aviation, mass transit and maritime environments.

In crowded public areas such as ferry terminals, mass transit stations and most recently, airports, the SPO-7 works without breaking passengers’ stride.

And lastly, to address safety and privacy concerns, the SPO-7 does not shoot X-rays or any other type of radiation at people. It merely measures energy that emanates from the human body. Signage is prominently displayed where the SPO-7 is used to notify the public. SPO-7 enables TSA to add an unpredictable security measure without adding inconvenience to passengers.

The SPO-7 pilots will continue at the Denver and Minneapolis-St. Paul airports for 60-90 days.

So, the two key things you should take away from this post are:

The SPO-7 cannot see through your clothing.

The SPO-7 does not project X-rays or any other types of radiation.

Here are some screen shots of what the operator sees:





Bob

TSA EoS Blog Team