More commercial jets, cargo planes and private aircraft will crowd the skies in the next several years to meet rising demand in the aviation industry, which already is fighting congestion in the air and on the ground, the FAA reports. In its annual 12-year forecast released Tuesday, the Federal Aviation Administration says commercial air travel will continue expanding through 2011. The number of international passengers is expected to exceed those traveling domestically, the agency says, continuing to push down fares if fuel prices don't become ruinous.