<ARTICLE> 5
<RESTATED>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                          37,534
<SECURITIES>                                         0
<RECEIVABLES>                                  373,315
<ALLOWANCES>                                         0
<INVENTORY>                                     17,646
<CURRENT-ASSETS>                               478,861
<PP&E>                                         299,748
<DEPRECIATION>                                  81,756
<TOTAL-ASSETS>                               1,502,010
<CURRENT-LIABILITIES>                          243,700
<BONDS>                                        335,086
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       641,219
<OTHER-SE>                                     103,044
<TOTAL-LIABILITY-AND-EQUITY>                 1,502,010
<SALES>                                              0
<TOTAL-REVENUES>                               802,297
<CGS>                                                0
<TOTAL-COSTS>                                  712,242
<OTHER-EXPENSES>                                 6,282
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              16,791
<INCOME-PRETAX>                                 66,982
<INCOME-TAX>                                    25,929
<INCOME-CONTINUING>                             41,053
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    41,053
<EPS-PRIMARY>                                      .66
<EPS-DILUTED>                                      .61
<FN>
EARNINGS PER SHARE FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1997 HAS BEEN 
RESTATED TO CONFORM WITH THE PROVISIONS OF FAS NO. 128, EARNINGS PER SHARE, 
ADOPTED BY THE COMPANY IN 1997.
</FN>