Adam Strange quotes the Lewis Carroll poem "The Jabberwocky" as he is distracting the guards from the train
Alanna mentions the planet Rimbor. In DC Comics, Rimbor is the home planet of the Legionnaire Ultra Boy.
Appearances of Arc #16: time stamp of 4:48 UTC. 4 + 4 + 8 = 16; Miss Martian mentions the "missing 16 hours" of the mind-controlled Justice League members.
Included as a bonus cartoon from the DC Comics Vault on the bluray release of Justice League: War (2014).
The events depicted occur on January 4th and 5th.