The Kenyans are the advance guard core of a UN-mandated, multinational force that will seek to restore peace to Haiti.

At Documenta, ruangrupa first did what it always does: dispatch an advance guard and set up a ruruhouse, or ruruHaus, to be locally specific.

Summer thunderstorms in the Washington area are generally transient events, sweeping across city and suburb from the north or west, following an advance guard of darkening skies.

At the barracks, an advance guard of protesters set about removing razor wire barricades.

On Black Lives Matter Plaza, a legacy of the last skirmish in the nation’s capital, an advance guard of the expected army of protesters had taken up positions by the White House fence, which was festooned with anti-Trump placards.