English to Spanish Other Government / Politics weapon handling

Hola,

En una traducción sobre el uso de armas de fuego me aparece esta frase. "Sight picture" lo estoy traduciendo como la imagen del blanco, pero no sé qué hacer con esto de "flash". El texto lo define así:

"Flash Sight Picture is the acceptance of less than perfect sight alignment and sight picture when the shot is fired. The weapon is presented rapidly and the shot is fired with the front sight post placed roughly center mass on the desired vital area. With a flash sight picture the front sight is maintained roughly in the center of the rear sight aperture. The sight must be acquired as rapidly as possible during the presentation."

Muchas gracias por toda sugerencia.

ERC