You can make the pig cops fly like the predator things by altering the
game.con file.  All you have to do is copy the Troop Jetpack data.
Just follow the instructions below and hopefully it should work.  Also I've
noticed that when you change the .con file you have to start a new game as the
saved games have there own .con file.

************************************************************

action APIGJETPACK      30 1 5 1 1
action APIGJETPACKILL   30 2 5 1 50
move PIGJETPACKVELS 64 -84
move PIGJETPACKILLVELS 192 -38
ai AIPIGJETPACK    APIGJETPACK   PIGJETPACKVELS seekplayer

// ***** INSERT THE ABOVE CODE ******
// ***** AND REPLACE THE state pigseekenemystate with the one below *****


state pigseekenemystate

    ifcansee ifp phigher { ifceilingdistl 128 { } else ifactornotstayput ai
AIPIGJETPACK break }
    ifai AIPIGCHARGE
    {
        ifcansee ifpdistl 3084
        {
            ifnotmoving ai AIPIGSEEKENEMY
            else ai AIPIGDIVING
        }
        break
    }
    else iffloordistl 32
    {
        ifpdistg 4096 { ifactornotstayput ai AIPIGCHARGE }
        ifrnd 8 { ifbulletnear ai AIPIGDODGE }
    }

    ifrnd 128 ifcansee
    {
        ifai AIPIGDODGE { ifcount 32 ai AIPIGCHARGE break }
        iffloordistl 32
        {
            ifpdistl 1024 ifp palive ifcanshoottarget
                { ai AIPIGSHOOTENEMY break }
            ifcount 48 { ifrnd 8 ifp palive ifcanshoottarget { ifrnd 192 ai
AIPIGSHOOTENEMY else ai AIPIGDIVING break } }
        }
    }
ends

// ***** Insert the state pigjetpackstate as well *****

state pigjetpackstate
    ifaction APIGJETPACKILL
    {
        ifcansee ifactioncount 2
        {
            resetactioncount
            sound PIG_ATTACK
            shoot SHOTGUN
        }

        ifp phigher ai AIPIGJETPACK
        else ifinwater ai AIPIGJETPACK
        ifcount 26 iffloordistl 32 ai AIPIGSEEKENEMY
    }
    else ifcount 48 ifcansee
        { action APIGJETPACKILL move PIGJETPACKILLVELS seekplayer }
ends

// ***** And replace the actor PIGCOP with the code below ****

actor PIGCOP PIGCOPSTRENGTH APIGSTAND fall
    state checksquished
    ifaction APIGSTAND ai AIPIGSEEKENEMY
    else ifaction APIGDEAD
    {
        ifrespawn ifcount RESPAWNTIME
            { spawn TRANSPORTERSTAR cstat 257 strength PIGCOPSTRENGTH ai
AIPIGSEEKENEMY }
        else { strength 0 ifhitweapon ifwasweapon RADIUSEXPLOSION { sound
SQUISHED state standard_jibs state delete_enemy } break }
    }
    else ifai AIPIGDYING state pigdyingstate
    else ifai AIPIGHIT { ifactioncount 3 ai AIPIGSEEKENEMY }
    else ifai AIPIGSHRINK state pigshrinkstate
    else
    {
        ifai AIPIGSEEKENEMY state pigseekenemystate
        else ifai AIPIGJETPACK { state pigjetpackstate soundonce
DUKE_JETPACK_IDLE }
        else ifai AIPIGDODGE state pigseekenemystate
        else ifai AIPIGSHOOTENEMY state pigshootenemystate
        else ifai AIPIGFLEEENEMY state pigfleeenemystate
        else ifai AIPIGDIVING state pigdivestate
        else ifai AIPIGCHARGE state pigseekenemystate
        ifhitweapon state checkpighitstate
        ifrnd 1
        {
            ifrnd 32 soundonce PIG_ROAM
            else ifrnd 64 soundonce PIG_ROAM2
            else soundonce PIG_ROAM3
        }
    }

/*