Yemen prepares for Unity Day SANAA, Yemen, May 20 (UPI) -- Amid increasing calls for secession from the southern provinces of Yemen, the government announced a military parade to mark Tuesday's Unity Day celebration. Unlike previous years, the parade will take place in the Central Security headquarters in the capital Sanaa, officials told the Yemen Post Sunday. The Interior Ministry had issued a security alert leading up to Unity Day, a statement said. "Sanaa is now under the highest level of alert and all measures have been taken to foil any potential terror attacks," read the ministerial statement. The ministry also ordered intensified security measures around government buildings and foreign embassies, the Yemen Post said.