trestle tower used in bridge construction is shown in figure 9-26.

BUNKERS are fortified shelters built partly or entirely below ground. The framework of bunkers is designed to provide protection against certain incoming munitions. Figure 9-27 shows an example of a bunker from the P-437, which is a standard bunker constructed under contingency operations.

Training of the tower and bunker construction is provided by-each regiment during their CCCT.

NATURAL DISASTER RECOVERY OPERATIONS

The Seabees are also tasked to help in humanitarian operations, providing disaster control and recovery measures in the event of natural disasters, such as the following:

Hurricane (Atlantic Region)/Typhoon (Pacific Region)

Flood/Tsunami

Figure 9-26. - Tower.