2. With respect to the use of railroads for checkpoints, the student
should adopt this attitude: "I might not see it, but if I do, I will
very likely be able to identify it with respect to the chart."
Figure 1-9 Power Transmission Lines
Power transmission lines are generally difficult to see from the air. To install the power line
network in a wooded area a path is cut through the forest. Airborne, this path area will look
similar to a dirt road.
Lookout towers are typically located on high terrain such as hilltops. They are difficult to locate
due to small size and coloring. Additionally, they may be "nested" in a wooded area such that
only the top third of the tower is visible. They are represented by a circled small black triangle
(refer to Figures 1-5, 1-6, 1-8, and 1-9).
CHART LEGEND REVIEW