1.   Rescue workers converged on the field, but had trouble reaching the wreckage amid tall stalks of corn in a field soggy from a day of heavy rain.

2.   Rough seas, strong currents and murky water had prevented divers from reaching the wreckage earlier.

3.   Pinpointing the cause of the disappearance of such aircraft is difficult because the United States often cannot reach the wreckage.

4.   Pinpointing the cause of the disappearance is time-consuming and difficult given U.S. authorities cannot reach the wreckage, he said.

5.   Reaching the wreckage took its toll.

6.   A Colombian rescue team reached wreckage thought to be that of a missing U.S. anti-drug reconnaissance plane, a Colombian official said.

7.   Apparently seeking to minimize casualties, the pilot crash-landed near the shore, where rescuers were able to reach the wreckage quickly.

8.   Because of heavy mist and thick tree cover, searchers were only able to reach the wreckage Wednesday.

9.   But Jacqueline Gomez Mazo, a state rescue official in Antioquia, reported that a two-person team reached the wreckage and had confirmed that nobody survived.

10.   Colombian troops reached the wreckage of an Ecuadorean airliner Tuesday that crashed into the slopes of Cumbal volcano near the border with Ecuador, the Colombian air force said.