The term attack aircraft carrier is identified in base64 scheme by the sequence YXR0YWNrIGFpcmNyYWZ0IGNhcnJpZXI=, while the MD5 signature is equal to 987da9e7da48a095e50e484c3d9857e8. The ASCII encoding of attack aircraft carrier in hexadecimal notation is 61747461636b2061697263726166742063617272696572.