As many 3,400 personnel of paramilitary and Delhi Police along with quick reaction teams have been deployed across the national capital for maintaining security in banks in view of rush of people to exchange the now-invalid currency notes of Rs 500 and Rs 1,000.<br/><br/>The deployment has been made as banks opened today after Tuesday night's announcement by Prime Minister Narendra Modi about the demonetization of the two higher domination notes. PTI reports that the Home Ministry has also kept about 1000 personnel at standby for immediate deployment in case of emergency.<br/><br/>There are about 149 scheduled commercial banks, including 56 regional rural banks, with branch network of about 1.30 lakh across the country. Besides, the co-operative banks have also been asked to take deposit and exchange the old notes with the new ones.