In Ancient Greek, one of the final two or three syllables of a word carries an accent. Each syllable may contain one or two vocalic morae, but only one can be accented; accented morae are pronounced at a higher pitch.
US military to launch fastest-ever plane. By the time you finish reading this sentence, the Falcon HTV-2, the fastest plane ever built, could have flown 18 miles. It would get from London to Sydney in less than an hour, while withstanding temperatures of almost 2,000C, hotter than the melting point of steel.
The plane is one of the fastest military aircraft to have entered operational service. The MiG-25 made its first flight in 1964, and was first used by the Soviet Air Defense Forces in 1970. The plane has an incredible top speed of Mach 3.2 (2,190 mph, or 3,524 km/h).