Even before today, some airlines had been moving to increase security.

The two airlines have been moving slowly to combine routes and other practices, a process that will be completed this year.

"What United does will determine where the other big airlines will move."

Even so, some analysts have said the airline moved far too slowly to attack its financial problems.

In November 1991 the airline moved to its current head office.

Unfortunately, the venture succeeded so well that major airlines moved in and doomed the business.

But the problem abated in the 1960's as the major airlines moved to jetliners.

The airlines are also fast moving toward larger, quieter planes.

The airline ultimately did not move its headquarters and maintenance facility.

Nevertheless, the airline is moving ahead with its sweeping growth plans.