1.   They laughed hysterically as many journalists flinched at the unexpected explosions of outgoing tank fire.

2.   Shelling continued this morning, most of it outgoing fire from government positions.

3.   The thud of outgoing artillery fire rattled windows and echoed through the valley, answered by several volleys of Katyushas.

4.   The thud of outgoing artillery fire rattled windows and echoed through the valley, answered by several volleys of Katyushas that caused no significant damage.