revision preference src: During the combat, when Lieutenant Knotts saw one of his comrades attacked by 7 enemy planes and in imminent danger of being shot down, he, although himself engaged with the enemy, went to the assistance of his comrade and attacked 2 of his immediate pursuers. <SEP> tgt: During the combat, when Lieutenant Knotts saw one of his comrades attacked by 7 enemy planes and in imminent danger of being shot down, he. Himself engaged with the enemy, went to the assistance of his comrade and attacked 2 of his immediate pursuers.