Homeland security vs. cellphones

A while ago I blogged about the dangers of putting WiFi and cellphones into planes. Sure everyone is bothered about loud-mouthed cellphone talkers causing fist fights, but what about the remotely triggered bomb bringing down the whole shebang? Anyway, it seems I wasn't the only one thinking about this as the Homeland Security boffins are now worried about it too (although they apparently have not come out against WiFi yet). They even managed to add a scenario I hadn't thought of - cellphone disputes distracting air marshals. It seems a no brainer though - hijacker one gets into simulated cellphone related argument with their neighbor (hijacker two) and air Marshal has to intervene. Hijacker three then does his thing while the air marshal is distracted - maybe whacking him over the head with kosh cunningly disguised as a vintage 1980's Motorola phone.