Volume changes of the lifting gas due to temperature changes or to changes of altitude are compensated for by pumping air into internal ballonets (air bags) to maintain the overpressure. Without sufficient overpressure, the blimp loses its ability to be steered and is slowed due to increased drag and distortion.
Maurice Jarre The publisher credits Barry Devorzon and Perry Botkin with composing Nadia's Theme. Maurice Jarre.
This theme was used for CBSâ coverage of the inauguration of President Barack Obama, anchored by Katie Couric. It is a great variation on the CBS Evening News theme composed by James Horner. While the theme is based on the Horner composition, the composer of this theme is actually Joel Beckerman of Man Made Music.