Does 'All five hijackers passed through the Main Terminal's west security screening checkpoint; United Airlines, which was the responsible air carrier, had contracted out the work to Argenbright Security.' hold a position of neutrality in relation to 'United Airlines contracted security screening work out to Argenbright Security.'
All five hijackers passed through the Main Terminal's west security screening checkpoint; United Airlines, which was the responsible air carrier, had contracted out the work to Argenbright Security.###United Airlines contracted security screening work out to Argenbright Security.