DSII: DFO attacks?

I was playing DSII earlier this evening using aerospace fighter support 
for the first time when I came across something I don't follow.

When making a DFO (deadfall ordnance) attack, each load draws two 
chits. P.41 continues to say that if, for example, two loads are 
dropped, "each element in the Zone draws a total of Four chits."

I am correct in reading this as four chits added together? The 
artillery rules expressly state that multiple draws are *not* added 
together (e.g., three medium guns hitting a zone would draw three sets 
of two chits, not six chits on each target). The DFO rules do not say 
this.

Assuming ground-attack fighters drop two or three loads, that is four 
to six chits on each target. That's a whole lotta hurt. 

Time to invest in some ADS tanks...