JOINT FILING INFORMATION

Reporting Person:	BLUE HARBOUR GROUP, LP
Address:	646 STEAMBOAT ROAD
	GREENWICH, CT 06830
Designated Filer:	BLUE HARBOUR GROUP, LP
Issuer and Symbol:	CACI INTERNATIONAL INC. ("CACI")
Date of Event Requiring Statement:	12/2/2013
Signature:	/s/ Clifton S. Robbins, Managing Member of Blue  Harbour Holdings, LLC, the General Partner of Blue Harbour Group. LP                                                                                         Clifton S. Robbins, Managing Member of Blue Harbour Holdings, LLC, the General Partner of Blue Harbour Group. LP
Reporting Person:	BLUE HARBOUR HOLDINGS, LLC
Address:	646 STEAMBOAT ROAD
	GREENWICH, CT 06830
Designated Filer:	BLUE HARBOUR GROUP, LP
Issuer and Symbol:	CACI INTERNATIONAL INC. ("CACI")
Date of Event Requiring Statement:	12/2/2013
Signature:	/s/ Clifton S. Robbins, Managing Member of Blue Harbour Holdings, LLC                                                Clifton S. Robbins, Managing Member of Blue Harbour Holdings, LLC
Reporting Person:	CLIFTON S. ROBBINS
Address:	646 STEAMBOAT ROAD
	GREENWICH, CT 06830
Designated Filer:	BLUE HARBOUR GROUP, LP
Issuer and Symbol:	CACI INTERNATIONAL INC. ("CACI")
Date of Event Requiring Statement:	12/2/2013
Signature:	/s/ Clifton S. Robbins Clifton S. Robbins