fire picket meaning in Hindi

Examples

1. Whilst this was happening a second IRA team overcame and disarmed the fire picket troops.
2. That particular night the 7th ( Dublin ) Infantry Battalion, a reserve battalion stationed at Portobello Barracks ( now Cathal Brugha Barracks ), was responsible for supplying the guard whilst the fire picket was supplied by a unit stationed in Islandbridge Barracks ( now Clancy Barracks ).