In the flashback in NF3 41, Nick Fury is saved from the explosion on page 21; he sets the explosion on page 20. So the flashback goes between pages 20-21, nice and neat!
FURY, COL. NICHOLAS "NICK" JOSEPH
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NF3 40
*NF3 41 (1-20)
NF3 41-FB-BTS
*NF3 41 (21-22)
NF3 42
…
IVORY/
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NF3 40
*NF3 41 (1-20)
NF3 41-FB
*NF3 41 (21-22)
NF3 42
…
KNOCKABOUT/
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NF3 40
*NF3 41 (1-20)
NF3 41-FB
*NF3 41 (21-22)
NF3 42
…
PSI-BORG/
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NF3 40
*NF3 41 (1-20)
NF3 41-FB
*NF3 41 (21-22)
NF3 42
…
VIOLENCE/
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NF3 40
*NF3 41 (1-20)
NF3 41-FB
*NF3 41 (21-22)
NF3 42
…