One of these developments was the growing United States influence within the Cambodian armed forces. The processing of equipment deliveries and the training of Cambodian personnel had forged close ties between United States military advisers and their Cambodian counterparts. Military officers of both nations also shared apprehensions about the spread of communism in Southeast Asia. Sihanouk considered FARK to be Washington's most powerful constituency in his country. The prince also feared that a number of high-ranking, rightist FARK officers led by Lon Nol were becoming too powerful and that, by association with these officers, United States influence in Cambodia was becoming too deeply rooted.