"A pilot is now going to have that extra duty of making sure that everybody seems to be doing the right thing on a crowded" frequency, he said.
Better on-time performance, for instance, requires spare planes, backup crews, extra mechanics on duty, and so on.
The South Western Ambulance Service said it had planned for an increase in calls coming through to them and had planned for it with extra crews on duty.
Mid-Atlantic utility companies also had extra repair crews on duty to deal with outages.
He added that extra officers were on duty Wednesday night in the area where the attack took place.
For example, they can ensure there are extra occupational therapists on duty during the spring and summer when complex operations - usually involving the elderly - are more likely to be performed.
Mark Rowley, an assistant commissioner at London's Metropolitan Police, whose counterterrorism unit is leading the investigation, said police raised its presence in Woolwich and the surrounding areas, with some 1, 200 extra officers were on duty across London.
Northumbria Police say extra officers will be on duty and have urged fans to vent their frustration peacefully.
Extra call center representatives will be on duty to handle an expected increase in queries from customers.
For frequent golf travelers who like to stuff extra clothes and accessories into their bags to minimize extra bag fees, pricier heavy-duty expandable travel bags like those made by ClubGlove are more useful.
WSJ: What to Get a Golfer for the Holidays | Golf Journal by John Paul Newport
There have been previous calls for players from the two countries to gain extra cash in return for increased demands on their time on international duty.
About 25 extra GPs have been hired by the CCGs, allowing two to be on duty at any one time.
The States also agreed to a 7% increase in tobacco duty, 1% higher than that proposed by Treasury and Resources, meaning an extra 24p on a pack of cigarettes.
Off-duty bus drivers are visiting depots in London in an open-top bus to demand extra pay for working during the Olympic Games.
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