The B-17 was reported as shot down by observers, but it survived and brought its crew home without injury.
His jet was spotted numerous times by observers on the ground.
The role played by observers in and the process of measurement.
Also, over the sea there was less chance of being spotted and reported by ground-based observers.
The election was relatively orderly and peaceful in most of the country, according to reports by observers.
Most movements in popular music arise without any clear understanding by participants or observers as to what is going on.
In November 2010, an election - described as flawed by observers - was held.
This trial must be in accordance with the rule of law and monitored by international observers.
Much of this effort is not easy to see by outside observers.
Antarctica is not an easy place to paint, as noted by various observers.