U.N. Secretary-General Ban Ki-moon vowed on Sunday to work to keep donor funds flowing for Haiti's recovery and reconstruction following the devastating January earthquake in the poor Caribbean state.

Look closely at the foreigners buzzing around a hospital tent above one of Haiti's biggest earthquake-refugee camps and a face stands out: There, carrying the box of supplies, that's Sean Penn.

The United States has no flag at its main installation near the Port-au-Prince airport, and that does not sit well with some veterans and servicemembers who say the U.S. government should be proud to fly the flag in Haiti, given the amount of money and manpower the U.S. is donating to help the country recover from the Jan. 12 quake.