The term reaction propulsion is identified in base64 scheme by the sequence cmVhY3Rpb24gcHJvcHVsc2lvbg==, while the MD5 signature is equal to d22e5d77b42b88ad0b66f1b1b74b057d. The ASCII encoding of reaction propulsion in hexadecimal notation is 7265616374696f6e2070726f70756c73696f6e.