Sudan People’s Liberation Army (SPLA) soldiers take part in a parade during their 29th anniversary celebrations in South Sudan’s capital Juba, May 16, 2012. South Sudan will soon acquire anti-aircraft missiles to defend its territory against air attacks it says are frequently carried out by warplanes from neighbouring Sudan, the South Sudanese military said on Wednesday. REUTERS/Adriane Ohanesian (SOUTH SUDAN – Tags: MILITARY ANNIVERSARY)