<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM _____
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH _______ .
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               MAR-31-1997
<CASH>                                         128,894
<SECURITIES>                                    32,666
<RECEIVABLES>                                  190,101
<ALLOWANCES>                                       975
<INVENTORY>                                          0
<CURRENT-ASSETS>                               366,323
<PP&E>                                         194,433
<DEPRECIATION>                                  60,581
<TOTAL-ASSETS>                                 667,406
<CURRENT-LIABILITIES>                          192,837
<BONDS>                                        173,785
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           348
<OTHER-SE>                                     295,944
<TOTAL-LIABILITY-AND-EQUITY>                   667,406
<SALES>                                              0
<TOTAL-REVENUES>                               169,976
<CGS>                                                0
<TOTAL-COSTS>                                  152,871
<OTHER-EXPENSES>                                (1,880)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               2,564
<INCOME-PRETAX>                                 16,422
<INCOME-TAX>                                     6,035
<INCOME-CONTINUING>                             10,387
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    10,387
<EPS-PRIMARY>                                      .30
<EPS-DILUTED>                                        0