<ARTICLE> 5
<RESTATED> 
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               SEP-30-1998
<CASH>                                          88,499
<SECURITIES>                                    44,448
<RECEIVABLES>                                  295,425
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                               466,041
<PP&E>                                         353,095
<DEPRECIATION>                                 113,939
<TOTAL-ASSETS>                                 937,952
<CURRENT-LIABILITIES>                          268,374
<BONDS>                                        178,051
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           768
<OTHER-SE>                                     464,179
<TOTAL-LIABILITY-AND-EQUITY>                   937,952
<SALES>                                              0
<TOTAL-REVENUES>                               848,379
<CGS>                                                0
<TOTAL-COSTS>                                  759,725
<OTHER-EXPENSES>                                (6,373)<F1>
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               8,290
<INCOME-PRETAX>                                 86,737
<INCOME-TAX>                                    27,823
<INCOME-CONTINUING>                             58,914
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    58,914
<EPS-PRIMARY>                                     0.77
<EPS-DILUTED>                                     0.76
<FN>
<F1>REPRESENTS INCOME
</FN>