During coalitions, following a successful, collective rout of an adversary or a predator (often people), the participating elephants may come together and, standing face to face, they may raise and intertwine their trunks, open their mouths and vocalize. In extreme cases they may even press their open mouths together. A more subtle form of this behavior may sometimes be observered prior to a Group-Advance or Group-Charge and appears to be a call to targeted action among family members.