It's a reference to Macross[1], though I wonder if the SDF abbreviation (in Macross) has any relation to the Japanese Self-Defense Force[2]. [1] https://en.wik

It's a reference to Macross[1], though I wonder if the SDF abbreviation (in Macross) has any relation to the Japanese Self-Defense Force[2]. [1] https://en.wikipedia.org/wiki/The_Super_Dimension_Fortress_Macross https://en.wikipedia.org/wiki/The_Super_Dimension_Fortress_M... [2] http://en.wikipedia.org/wiki/Japan_Self-Defense_Forces http://en.wikipedia.org/wiki/Japan_Self-Defense_Forces