Which of the following statement(s) is/are correct?
1. In a first, an indigenously developed howitzer gun, ATAG, became part of the 21-gun salute during the Independence Day ceremony at the Red Fort.
2. The ATAGS is configured with all electric drive to ensure maintenance free and reliable operation over a longer period of time.
3. It has been developed by the DRDO in partnership with Larsen and Toubro Defence Ltd.
Select the correct codes from below -