The following are a list of chronological events that pre-date the start of the series.
1968
- Donald Lydecker is born.
1986
- Donald Lydecker enlisted in the army. He would see action in Panama, Kuwait, and Somalia.
1988
November
- 11
Logan Cale is born.
1989
- Donald Lydecker sees action in Panama.
1995
- Donald Lydecker's wife dies under mysterious circumstances.
1996
- Donald Lydecker buys an ADAP (alchohol and drug abuse program) form.
2000
- Transgenic X5-452 is born.
2009
- 12 X5s escape Manticore's Guilette, Wyoming facility.
June
- 1