NEW DELHI (Agencies) - With India's coastal security already breached by terrorists in Mumbai, Defence Minister AK Antony on Wednesday warned the armed forces of possible terror attacks from airborne platforms similar to the 9/11 attacks in the US, reports Indian media. Antony asked them to be prepared to counter the threat of terrorists from the air and prevent a repeat of World Trade Center-type of attacks. At a meeting with the three services chief and defence officials, Antony called for greater coordination among all security and intelligence agencies so as to make the intelligence inputs actionable. The meeting also reviewed the situation along the LoC in Kashmir. Antony, sources said, worked out measures with the armed forces for tightening security and vigil along the LoC to prevent infiltration. The top defence brass discussed plans for beefing up coastal security and hastening acquisition process for systems and platforms including coastal radars and interceptor boats. Meanwhile, India will give a "befitting reply" to last week's attacks in Mumbai and will not "bow before terrorism," the leader of the ruling Congress party Sonia Gandhi said Wednesday."We will never bow before terrorism. We will give a befitting reply," Gandhi said at a rally in Kashmir. Apparently giving a strong message to Islamabad, Sonia said, "Our friendship with Pakistan should not be misconstrued. India wants to develop peaceful bilateral ties with all its neighbours but this should not be taken as our weakness. "Terrorism is against democracy, and we will fight back by giving a befitting reply through diplomatic channels."She said there will be no compromise with those who are against humanity and human values.