| | — | AT&T INFORMATION SYSTEMS, INC | $0 | FEDERAL AVIATION ADMINISTRATION | — | — | — | 7021 | Oct 15, 1997 | Oct 15, 1997 | Dec 15, 1997 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | FEDERAL AVIATION ADMINISTRATION | — | — | — | 7021 | Sep 15, 1997 | Sep 15, 1997 | Nov 15, 1997 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | FEDERAL AVIATION ADMINISTRATION | — | — | — | 7021 | Jul 15, 1997 | Jul 15, 1997 | Sep 15, 1998 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Jun 15, 1997 | Jun 15, 1997 | Sep 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Jun 15, 1997 | Jun 15, 1997 | Sep 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | FEDERAL AVIATION ADMINISTRATION | — | — | — | 7021 | Jun 15, 1997 | Jun 15, 1997 | Sep 15, 1998 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | FEDERAL AVIATION ADMINISTRATION | — | — | — | 7021 | May 15, 1997 | May 15, 1997 | Sep 15, 1997 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Apr 15, 1997 | Apr 15, 1997 | Sep 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Mar 15, 1997 | Mar 15, 1997 | Sep 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | FEDERAL AVIATION ADMINISTRATION | — | — | — | 7021 | Mar 15, 1997 | Mar 15, 1997 | Feb 15, 1998 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Mar 15, 1997 | Mar 15, 1997 | Sep 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Mar 15, 1997 | Mar 15, 1997 | Mar 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | FEDERAL AVIATION ADMINISTRATION | — | — | — | 7021 | Mar 15, 1997 | Mar 15, 1997 | Sep 15, 1997 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Mar 15, 1997 | Mar 15, 1997 | Sep 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Feb 15, 1997 | Feb 15, 1997 | Feb 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | FEDERAL AVIATION ADMINISTRATION | — | — | — | 7021 | Feb 15, 1997 | Feb 15, 1997 | Sep 15, 1997 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Feb 15, 1997 | Feb 15, 1997 | Sep 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | FEDERAL AVIATION ADMINISTRATION | — | — | — | 7021 | Feb 15, 1997 | Feb 15, 1997 | Sep 15, 1997 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Feb 15, 1997 | Feb 15, 1997 | Feb 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Feb 15, 1997 | Feb 15, 1997 | Feb 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Feb 15, 1997 | Feb 15, 1997 | Feb 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Feb 15, 1997 | Feb 15, 1997 | Feb 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Feb 15, 1997 | Feb 15, 1997 | Feb 15, 1999 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | FEDERAL AVIATION ADMINISTRATION | — | — | — | 7021 | Feb 15, 1997 | Feb 15, 1997 | Dec 15, 1997 |
| | — | AT&T INFORMATION SYSTEMS, INC | $0 | UNITED STATES COAST GUARD | — | — | — | 7021 | Feb 15, 1997 | Feb 15, 1997 | Feb 15, 1999 |